Current Electricity – LearnITbyTests

1. Metals have a constant resistance with current flow. They are said to be:

Ohmic conductor

Insulator

Good conductor

Non-ohmic conductor

Question 1 of 117

2. Mention the SI UNIT of resistance

Ohm

Joules

Watt

Coulomb

Question 2 of 117

3. Why is the Wheatstone bridge method more accurate than the Voltmeter ammeter method?

The value obtained in the Wheatstone bridge method depends on the accuracy of galvanometer.

Because galvanometer is easy to adjust

The value obtained in the Wheatstone bridge method does not depend on the accuracy of galvanometer.

NONE OF THE ABOVE

Question 3 of 117

4. Describe the resistivity of a metal conductor in relation to temperature?

As temperature increases resistivity also increases

As temperature increases resistivity also decreases

As temperature decreases resistivity also increases

None of the above

Question 4 of 117

5. A semi-conductor diode, thermionic diode and thermistor are materials whose resistance is not constant with current flow, they are said to be:

Ohmic conductor

Insulator

Good conductor

Non-ohmic conductor

Question 5 of 117

6. In the Wheatstone bridge method when the galvanometer is adjusted until there is no difference in G the bridge is said to be:

Imbalanced

Zero

Balanced

None

Question 6 of 117

7. Which of the following is not a type of a fixed resistor?

Wire-wound resistor

Rheostat

Carbon resistor

Paper wound resistor

Question 7 of 117

8. Mention the 3 types of resistors?

Fixed resistor

Non-linear resistance

Variable resistor

All of the above

Question 8 of 117

9. In the Wheatstone bridge method when the galvanometer is adjusted until there is no difference in G the bridge is said to be:

Imbalanced

Zero

Balanced

None

Question 9 of 117

10. Describe the resistivity of a semi-conductor in relation to temperature?

As temperature increases resistivity also increases

As temperature increases resistivity also decreases

As temperature decreases resistivity also decreases

None of the above

Question 10 of 117

11. CURRENT = E.M.F /TOTAL RESISTANCE

TRUE

FALSE

MAYBE

NONE

Question 11 of 117

12. Mention the 3 types of resistors?

Fixed resistor

Non-linear resistance

Variable resistor

All of the above

Question 12 of 117

13. Give the name of conductors which obey Ohms Law

Good conductors

Insulator

Ohmic conductor

Non-ohmic conductor

Question 13 of 117

14. Ohms Law explains about the relationship between:

Voltage and resistance

Voltage and current

Voltage and potential difference

Work done and charges

Question 14 of 117

15. Metals have a constant resistance with current flow. They are said to be:

Ohmic conductor

Insulator

Good conductor

Non-ohmic conductor

Question 15 of 117

16. Which of the following is not a method to measure resistance in a circuit?

Voltmeter- ammeter method

The Wheatstone Bridge method

The meter bridge method

The Tudor-Bridge Method

Question 16 of 117

17. Which of the following is not a method to measure resistance in a circuit?

Voltmeter- ammeter method

The Wheatstone Bridge method

The meter bridge method

The Tudor-Bridge Method

Question 17 of 117

18. Mention the 3 types of resistors?

Fixed resistor

Non-linear resistance

Variable resistor

All of the above

Question 18 of 117

19. Name of the resistor that gives a fixed amount of resistance?

Variable resistor

Fixed resistance

Movable

Fixed resistor

Question 19 of 117

20. What is the name given to opposition offered by a conductor to the flow of electric current?

NASA

Jubilee

Electrical resistance

None

Question 20 of 117

21. Electrical resistance of a uniform conductor increases with the length of the conductor?

True

False

Maybe

None

Question 21 of 117

22. Which of the following statements about potential difference is CORRECT?

Potential difference is work done to move an electric charge through a conductor

Measured in volts using the voltmeter

P.D = WORKDONE W (joules)/ CHARGE MOVED Q (couloumb)

None of the above

Question 22 of 117

23. Describe the resistivity of a metal conductor in relation to temperature?

As temperature increases resistivity also increases

As temperature increases resistivity also decreases

As temperature decreases resistivity also increases

None of the above

Question 23 of 117

24. Ohms Law explains about the relationship between:

Voltage and resistance

Voltage and current

Voltage and potential difference

Work done and charges

Question 24 of 117

25. Materials which have a very low electrical resistance are said to have what type of conductance?

Medium

Low

High

Stable

Question 25 of 117

26. A non-ohmic conductor is a type of conductor whose resistance varies drastically with current flow hence it has no constant resistance. True or False?

False

True

Maybe

None

Question 26 of 117

27. Mention the SI UNIT of resistance

Ohm

Joules

Watt

Coulomb

Question 27 of 117

28. Mention the Law of components which are connected in parallel?

The total current flowing into a junction equals the total current flowing out

The same voltage drops across each of them

The current varies in each component

None of the above

Question 28 of 117

29. A non-ohmic conductor is a type of conductor whose resistance varies drastically with current flow hence it has no constant resistance. True or False?

False

True

Maybe

None

Question 29 of 117

30. The potential difference of a cell/ battery between its terminals when no charge is flowing out of the cell/battery (in open circuit) is called?

P.D

Electromotive force

Voltage

None

Question 30 of 117

31. Which of the following is an example of Non-linear resistor?

Thermistor

Potentiometer

Light dependent resistor

L.E.D smart tv

Question 31 of 117

32. Which of the following is an example of Non-linear resistor?

Thermistor

Potentiometer

Light dependent resistor

L.E.D smart tv

Question 32 of 117

33. Ohms Law explains about the relationship between:

Voltage and resistance

Voltage and current

Voltage and potential difference

Work done and charges

Question 33 of 117

34. Resistors connected in series the equivalent resistance is equal to the sum of individual resistance i.e. R total= R1 + R2 +R3

FALSE

Maybe

True

None

Question 34 of 117

35. Electrical resistance of a wire conductor is conversely proportional to its cross-section area A.

False

True

Maybe

None

Question 35 of 117

36. In resistors connected in parallel the equivalent resistance is given by: 1/R equivalent = 1/R1 + 1/R2 + 1/R3

True

False

Maybe

None

Question 36 of 117

37. A conductor which has a constant resistance to current flow is called?

Good conductors

Insulator

Ohmic conductor

Non-ohmic conductor

Question 37 of 117

38. Resistors connected in series the equivalent resistance is equal to the sum of individual resistance i.e. R total= R1 + R2 +R3

FALSE

Maybe

True

None

Question 38 of 117

39. Which formula best describes Ohms Law ?

V is proportional to I

I = V/R

R= V/I

R=V*I

Question 39 of 117

40. Name of the resistor that gives a fixed amount of resistance?

Variable resistor

Fixed resistance

Movable

Variable resistance

Question 40 of 117

41. In resistors connected in parallel the equivalent resistance is given by: 1/R equivalent = 1/R1 + 1/R2 + 1/R3

True

False

Maybe

None

Question 41 of 117

42. Name a resistor whose resistance DOES NOT change linearly with the changes in the applied voltage?

Fixed resistor

Non-linear resistor

Variable resistor

Movable resistor

Question 42 of 117

43. Electrical resistance of a wire conductor is conversely proportional to its cross-section area A.

False

True

Maybe

None

Question 43 of 117

44. Describe the resistivity of a semi-conductor in relation to temperature?

As temperature increases resistivity also increases

As temperature increases resistivity also decreases

As temperature decreases resistivity also decreases

None of the above

Question 44 of 117

45. Describe the resistivity of a semi-conductor in relation to temperature?

As temperature increases resistivity also increases

As temperature increases resistivity also decreases

As temperature decreases resistivity also decreases

None of the above

Question 45 of 117

46. Mention the law of components that are connected in series in an electric circuit?

The same current flows through each component

The sum of voltage drops across the component is equal to supply voltage

The current varies in each component

all of the above

Question 46 of 117

47. Mention the law of components that are connected in series in an electric circuit?

The same current flows through each component

The sum of voltage drops across the component is equal to supply voltage

The current varies in each component

all of the above

Question 47 of 117

48. Mention the SI UNIT of resistance

Ohm

Joules

Watt

Coulomb

Question 48 of 117

49. Resistors can be connected in 3 types of connections in a circuit?

Series connection

Parallel connection

Series- parallel connection

All of the above

Question 49 of 117

50. Mention the Law of components which are connected in parallel?

The total current flowing into a junction equals the total current flowing out

The same voltage drops across each of them

The current varies in each component

None of the above

Question 50 of 117

51. Describe the resistivity of a metal conductor in relation to temperature?

As temperature increases resistivity also increases

As temperature increases resistivity also decreases

As temperature decreases resistivity also increases

None of the above

Question 51 of 117

52. What is the name of conductors which are designed to offer specific resistance to electric flow of current?

Semi-conductor

Resistors

Flow meter

Ammeter

Question 52 of 117

53. A conductor which has a constant resistance to current flow is called?

Good conductors

Insulator

Ohmic conductor

Non-ohmic conductor

Question 53 of 117

54. Which of the following is not a type of a fixed resistor?

Wire-wound resistor

Rheostat

Carbon resistor

Paper wound resistor

Question 54 of 117

55. Resistors can be connected in 3 types of connections in a circuit?

Series connection

Parallel connection

Series- parallel connection

All of the above

Question 55 of 117

56. Name the 3 factors which affect the resistance of a metallic conductor?

Temperature

Length of conductor

Cross section area

All of the above

Question 56 of 117

57. Name the instrument used to measure electrical resistance?

Voltmeter

Ohmmeter

Ammeter

Gauge

Question 57 of 117

58. Name the instrument used to measure electrical resistance?

Voltmeter

Ohmmeter

Ammeter

Gauge

Question 58 of 117

59. Name of the resistor that gives a fixed amount of resistance?

Variable resistor

Fixed resistance

Movable

Variable resistance

Question 59 of 117

60. CURRENT = E.M.F /TOTAL RESISTANCE

TRUE

FALSE

MAYBE

NONE

Question 60 of 117

61. Which formula best describes Ohms Law ?

V is proportional to I

I = V/R

R= V/I

R=V*I

Question 61 of 117

62. In resistors connected in parallel the equivalent resistance is given by: 1/R equivalent = 1/R1 + 1/R2 + 1/R3

True

False

Maybe

None

Question 62 of 117

63. In a series-parallel connection the whole network of resistors is reduced into a single resistor?

True

False

Maybe

None

Question 63 of 117

64. The difference between E.M.F of a cell and the terminal voltage is known as?

Electromotive force

Potential difference

Internal resistance

Lost voltage

Question 64 of 117

65. Which of the following statements about potential difference is CORRECT?

Potential difference is work done to move an electric charge through a conductor

Measured in volts using the voltmeter

P.D = WORKDONE W (joules)/ CHARGE MOVED Q (couloumb)

None of the above

Question 65 of 117

66. The potential difference of a cell/ battery between its terminals when no charge is flowing out of the cell/battery (in open circuit) is called?

P.D

Electromotive force

Voltage

None

Question 66 of 117

67. Electrical resistance of a uniform conductor increases with the length of the conductor?

True

False

Maybe

None

Question 67 of 117

68. The potential difference of a cell/ battery between its terminals when no charge is flowing out of the cell/battery (in open circuit) is called?

P.D

Electromotive force

Voltage

None

Question 68 of 117

69. Which of the following is not a type of a fixed resistor?

Wire-wound resistor

Rheostat

Carbon resistor

Paper wound resistor

Question 69 of 117

70. Resistivity of a material is numerically equal to the resistance of a material of unit length and unit cross-section area at a certain temperature?

False

Maybe

True

None

Question 70 of 117

71. Resistivity of a material is numerically equal to the resistance of a material of unit length and unit cross-section area at a certain temperature?

False

Maybe

True

None

Question 71 of 117

72. Which of the following is an example of Non-linear resistor?

Thermistor

Potentiometer

Light dependent resistor

L.E.D smart tv

Question 72 of 117

73. Name of the resistor that gives a fixed amount of resistance?

Variable resistor

Fixed resistance

Movable

Variable resistance

Question 73 of 117

74. Resistivity of a material is numerically equal to the resistance of a material of unit length and unit cross-section area at a certain temperature?

False

Maybe

True

None

Question 74 of 117

75. In a series-parallel connection the whole network of resistors is reduced into a single resistor?

True

False

Maybe

None

Question 75 of 117

76. Name the instrument used to measure electrical resistance?

Voltmeter

Ohmmeter

Ammeter

Gauge

Question 76 of 117

77. In the Wheatstone bridge method when the galvanometer is adjusted until there is no difference in G the bridge is said to be:

Imbalanced

Zero

Balanced

None

Question 77 of 117

78. What is the name given to opposition offered by a conductor to the flow of electric current?

NASA

Jubilee

Electrical resistance

None

Question 78 of 117

79. State Ohms law

The current flowing through a conductor is equal to the potential difference across it

The current flowing through a conductor is inversely proportional to the potential difference across it provided the temperature and other physical conditions are kept constant.

The current flowing through a conductor is directly proportional to the potential difference across it provided the temperature and other physical conditions are kept constant.

None of the mentioned

Question 79 of 117

80. State Ohms law

The current flowing through a conductor is equal to the potential difference across it

The current flowing through a conductor is inversely proportional to the potential difference across it provided the temperature and other physical conditions are kept constant.

The current flowing through a conductor is directly proportional to the potential difference across it provided the temperature and other physical conditions are kept constant.

None of the mentioned

Question 80 of 117

81. What is the name of conductors which are designed to offer specific resistance to electric flow of current?

Semi-conductor

Resistors

Flow meter

Ammeter

Question 81 of 117

82. Electrical resistance in a conductor increases as temperature is increased?

False

True

Maybe

None

Question 82 of 117

83. Mention the law of components that are connected in series in an electric circuit?

The same current flows through each component

The sum of voltage drops across the component is equal to supply voltage

The current varies in each component

all of the above

Question 83 of 117

84. Materials which have a very low electrical resistance are said to have what type of conductance?

Medium

Low

High

Stable

Question 84 of 117

85. Which of the following is not a method to measure resistance in a circuit?

Voltmeter- ammeter method

The Wheatstone Bridge method

The meter bridge method

The Tudor-Bridge Method

Question 85 of 117

86. A semi-conductor diode, thermionic diode and thermistor are materials whose resistance is not constant with current flow, they are said to be:

Ohmic conductor

Insulator

Good conductor

Non-ohmic conductor

Question 86 of 117

87. Name of the resistor that gives a fixed amount of resistance?

Variable resistor

Fixed resistance

Movable

Fixed resistor

Question 87 of 117

88. Name the 3 factors which affect the resistance of a metallic conductor?

Temperature

Length of conductor

Cross section area

All of the above

Question 88 of 117

89. Resistors connected in series the equivalent resistance is equal to the sum of individual resistance i.e. R total= R1 + R2 +R3

FALSE

Maybe

True

None

Question 89 of 117

90. Give the name of conductors which obey Ohms Law

Good conductors

Insulator

Ohmic conductor

Non-ohmic conductor

Question 90 of 117

91. Name a resistor whose resistance DOES NOT change linearly with the changes in the applied voltage?

Fixed resistor

Non-linear resistor

Variable resistor

Movable resistor

Question 91 of 117

92. A semi-conductor diode, thermionic diode and thermistor are materials whose resistance is not constant with current flow, they are said to be:

Ohmic conductor

Insulator

Good conductor

Non-ohmic conductor

Question 92 of 117

93. A non-ohmic conductor is a type of conductor whose resistance varies drastically with current flow hence it has no constant resistance. True or False?

False

True

Maybe

None

Question 93 of 117

94. What is the name given to opposition offered by a conductor to the flow of electric current?

NASA

Jubilee

Electrical resistance

None

Question 94 of 117

95. Why is the Wheatstone bridge method more accurate than the Voltmeter ammeter method?

The value obtained in the Wheatstone bridge method depends on the accuracy of galvanometer.

Because galvanometer is easy to adjust

The value obtained in the Wheatstone bridge method does not depend on the accuracy of galvanometer.

NONE OF THE ABOVE

Question 95 of 117

96. A conductor which has a constant resistance to current flow is called?

Good conductors

Insulator

Ohmic conductor

Non-ohmic conductor

Question 96 of 117

97. Materials which have a very low electrical resistance are said to have what type of conductance?

Medium

Low

High

Stable

Question 97 of 117

98. Which of the following statements about potential difference is CORRECT?

Potential difference is work done to move an electric charge through a conductor

Measured in volts using the voltmeter

P.D = WORKDONE W (joules)/ CHARGE MOVED Q (couloumb)

None of the above

Question 98 of 117

99. Electrical resistance of a wire conductor is conversely proportional to its cross-section area A.

False

True

Maybe

None

Question 99 of 117

100. Name of the resistor that gives a fixed amount of resistance?

Variable resistor

Fixed resistance

Movable

Fixed resistor

Question 100 of 117

101. Which formula best describes Ohms Law ?

V is proportional to I

I = V/R

R= V/I

R=V*I

Question 101 of 117

102. The difference between E.M.F of a cell and the terminal voltage is known as?

Electromotive force

Potential difference

Internal resistance

Lost voltage

Question 102 of 117

103. Electrical resistance in a conductor increases as temperature is increased?

False

True

Maybe

None

Question 103 of 117

104. Resistors can be connected in 3 types of connections in a circuit?

Series connection

Parallel connection

Series- parallel connection

All of the above

Question 104 of 117

105. Metals have a constant resistance with current flow. They are said to be:

Ohmic conductor

Insulator

Good conductor

Non-ohmic conductor

Question 105 of 117

106. What is the name of conductors which are designed to offer specific resistance to electric flow of current?

Semi-conductor

Resistors

Flow meter

Ammeter

Question 106 of 117

107. Name the 3 factors which affect the resistance of a metallic conductor?

Temperature

Length of conductor

Cross section area

All of the above

Question 107 of 117

108. Why is the Wheatstone bridge method more accurate than the Voltmeter ammeter method?

The value obtained in the Wheatstone bridge method depends on the accuracy of galvanometer.

Because galvanometer is easy to adjust

The value obtained in the Wheatstone bridge method does not depend on the accuracy of galvanometer.

NONE OF THE ABOVE

Question 108 of 117

109. Electrical resistance in a conductor increases as temperature is increased?

False

True

Maybe

None

Question 109 of 117

110. State Ohms law

The current flowing through a conductor is equal to the potential difference across it

The current flowing through a conductor is inversely proportional to the potential difference across it provided the temperature and other physical conditions are kept constant.

The current flowing through a conductor is directly proportional to the potential difference across it provided the temperature and other physical conditions are kept constant.

None of the mentioned

Question 110 of 117

111. Give the name of conductors which obey Ohms Law

Good conductors

Insulator

Ohmic conductor

Non-ohmic conductor

Question 111 of 117

112. In a series-parallel connection the whole network of resistors is reduced into a single resistor?

True

False

Maybe

None

Question 112 of 117

113. CURRENT = E.M.F /TOTAL RESISTANCE

TRUE

FALSE

MAYBE

NONE

Question 113 of 117

114. The difference between E.M.F of a cell and the terminal voltage is known as?

Electromotive force

Potential difference

Internal resistance

Lost voltage

Question 114 of 117

115. Mention the Law of components which are connected in parallel?

The total current flowing into a junction equals the total current flowing out

The same voltage drops across each of them

The current varies in each component

None of the above

Question 115 of 117

116. Name a resistor whose resistance DOES NOT change linearly with the changes in the applied voltage?

Fixed resistor

Non-linear resistor

Variable resistor

Movable resistor

Question 116 of 117

117. Electrical resistance of a uniform conductor increases with the length of the conductor?

True

False

Maybe

None

Question 117 of 117

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