Cells and Simple Circuits

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

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

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3. Mention 2 defects of a primary simple cell

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

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

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

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

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

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9. Mention the 2 types of conductors

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10. Mention the 2 types of chemical cells

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

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

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

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14. SI UNIT of current is?

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

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

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

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18. Why are metals good conductors of electricity?

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19. 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?

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

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

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

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

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

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

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26. Mention 2 types of circuits?

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

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28. 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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29. How are secondary cells recharged?

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30. What is an electric current?

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

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

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33. Define local action?

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

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

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

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

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

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

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

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41. What is polarization in a primary cell?

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42. How does a depolarizer work?

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

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44. What increases Local action?

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

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46. Why is Graphite a poor conductor of electricity?

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

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

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

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51. Why are secondary cells called storage cells?

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

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

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

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55. 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 55 of 55