Cells and Simple Circuits

1. Which of the following is not an example of a secondary cell?

Question 1 of 55

2. Which of the following is not a conductor of electricity?

Question 2 of 55

3. Mention 2 defects of a primary simple cell

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4. Mention the 2 types of conductors

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5. Which of the following statements is correct concerning electrical devices which are connected in series?

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6. SI UNIT of current is?

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7. A chemical cell which can be renewed once the chemical cells are exhausted is called?

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8. Chemical cells are cells which provide E.M.F as a result of a chemical reaction?

Question 8 of 55

9. What is the main principle of selecting a metal plate to be used in a primary cell?

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10. What are the main reasons which cause an open circuit?

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11. The MAIN advantage of parallel connection of cells is that current is supplied for a longer time?

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12. Why do bulbs connected in parallel light brighter than the ones connected in series?

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13. Mention 2 types of circuits?

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14. Which of the following is not among the uses of electrical energy?

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15. What determines the current-carrying capacity in a Lead acid accumulator?

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16. Which of the following statements is TRUE about when cells are connected in series?

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17. What is the difference between E.M.F and potential difference?

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18. What is an electric current?

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19. What increases Local action?

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20. Why are metals good conductors of electricity?

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21. Why are secondary cells called storage cells?

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22. When 2 or more cells are connected such that the positive terminals of one is joined to the negative terminal of another one, they are said to be connected in?

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23. When 2 or more cells are connected such that the positive terminal of one is connected to the positive terminal of the other, while the negative terminal of one is connected to the negative terminal of the other; they are said to be connected in?

Question 23 of 55

24. Which of the following is not among the maintenance procedures of accumulators?

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25. Semiconductors are materials whose electrical properties lie between conductors and insulators?

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26. Potential difference is measured in volts by an instrument called?

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27. In a primary cell the least reactive metal will lose electrons and become negative ion?

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28. Direction of charges in a chemical cell is opposite the direction of electron flow?

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29. Why do operations in ships prefer alkaline accumulator over Lead-acid accumulator?

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30. Why do bubbles accumulate (polarization) around the least reactive metal of primary cell?

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31. How are secondary cells recharged?

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32. What type of circuit allows charges to move in a complete path?

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33. Why is Graphite a poor conductor of electricity?

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34. In a primary cell the most reactive metal will lose electrons and become positive ion?

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35. What type of circuit does not allow charges to move or stops the charges flowing?

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36. Materials which allow electric charges to pass through them are called?

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37. What is polarization in a primary cell?

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38. Which of the following is NOT among the maintenance procedures of an accumulator?

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39. Mention the 2 types of chemical cells

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40. Which of the following is not a source of electricity?

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41. Voltage is directly proportional to current so long as resistance is kept constant?

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42. Which of the following formulas is used to calculate the amount of current flowing in a circuit given the charge?

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43. A battery is two or more cells connected together?

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44. Electric current is the rate of flow of charges?

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45. Which of the following statements is TRUE about when cells are connected in parallel?

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46. A chemical cell which cannot be renewed once the chemical cells are exhausted is called?

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47. Define local action?

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48. Which of the following is NOT a disadvantage of the alkaline accumulator over Lead-acid accumulator?

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49. Cells in parallel connection should have IDENTICAL E.M.F or otherwise one will drain the other?

Question 49 of 55

50. Which of the following statements is correct concerning electrical devices which are connected in parallel?

Question 50 of 55

51. How does a depolarizer work?

Question 51 of 55

52. How do you prevent short circuiting in a Lead acid accumulator?

Question 52 of 55

53. How do you minimize polarization in a primary cell?

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54. What will happen if cell A which has E.M.F of 3.0 V is connected in parallel to another cell which has an E.M.F of 1.5V?

Question 54 of 55

55. What are the effects of polarization in a primary cell?

Question 55 of 55