Magnetic Effect of an Electric Current

1. Which of the following rule states that if a coil carrying current is held in the right hand such that the fingers encircle the loops while pointing in the direction of current flow, the thumb points in the direction of North Pole?

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2. Which of the following rule states that: if the left hand is held with the thumb, the first and the second fingers mutually at right angles so that the first finger points in the direction of the current, then the thumb points in the direction of the motion.

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3. Define a solenoid

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4. Which of the following rules states that if a right handed screw is driven forward in the direction of the conventional current, then the direction of rotation of the screw is the direction of the produced magnetic field lines.

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5. The right hand Grip rule can also be applied to predict the north pole of an electromagnet (many loop conductor). True or False?

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6. Which rule states that: if one imagines one is swimming along a wire in the direction of the current and facing the compass needle, the north pole of the needle will be deflected towards the swimmers left hand?

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7. Which of the following statements is INCORRECT about the magnetic strength of an electromagnet?

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8. Which of the following rules states that if the fingers of the right hand encircle the current loop such that they point in the direction of current the thumb points in the direction of the magnetic field formed through the inside of the loop.

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9. Increasing the size of the current in the solenoid will also increase the strength of an electromagnet. True or False?

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10. Which of the two rules can help you predict the direction of magnetic field produced by a straight conductor.

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11. Which of the following is not an application of electromagnets

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12. Mention the ways in which you can improve the strength a simple electric d.c motor?

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13. Which of the following statement is CORRECT about a magnetic field produced by a straight conductor?

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14. Which rule is used to predict the direction of force of a conductor carrying current in a magnetic field?

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15. Which of the following rules states that if a conductor carrying a current is grasped in the right hand with the thumb pointing along the wire in the direction of the conventional current, the fingers will point in the direction of the magnetic field.

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16. Which of the following statements is CORRECT about the force on a current carrying conductor when placed in a magnetic field of a magnet?

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17. Mention 2 ways of reversing the force produced when a current carrying conductor is placed in a magnetic field of a magnet?

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18. What is the purpose of Ampere's swimming rule?

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19. The right hand grip rule is used for 2 types of conductors mention them?

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20. Increasing the number of turns of wires in the solenoid will reduce the strength of an electromagnet. True or False?

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21. Which of the following statement is TRUE concerning the magnetic field pattern of a solenoid?

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22. Which of the following rule predicts the direction of magnetic field produced by a straight conductor?

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23. Which of the following factors will affect the strength of an electromagnet?

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24. How can one increase the strength of the magnetic field of a current in a circuit?

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25. An electromagnet is a type of a magnet which gets magnetized when electricity flows through it and loses magnetism when the current is cut off.

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26. When charges flow [electric current] through a circuit they have an associated magnetic field. True or False

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