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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 242 · 40 questions
TalentJR

Remember (Line them up, add them up): Series (+ to −): total voltage = add the cells; n identical cells = n × one cell. Parallel (identical cells, + with +): the voltage stays the same as one cell. The bump end is +, the flat end is −; the long line in the symbol is +.

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  1. 1.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
  2. 2.🔋 What is a battery? (a) two or more cells joined (b) one single wire (c) a kind of bulb (d) a switch with a lid
  3. 3.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  4. 4.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
  5. 5.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  6. 6.🔋 A 6 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  7. 7.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 230 V (c) 1.5 V (d) 0.5 V
  8. 8.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) the same voltage (c) half the voltage (d) no voltage
  9. 9.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
  10. 10.🔋 3 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
  11. 11.🔋 A 9 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
  12. 12.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  13. 13.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
  14. 14.🔋 2 identical 1.5 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
  15. 15.🔋 How many 3 V cells must be joined in series to give 12 V?
  16. 16.🔋 How many 1.5 V cells must be joined in series to give 12 V?
  17. 17.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
  18. 18.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
  19. 19.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  20. 20.🔋 A 6 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
  21. 21.🔋 5 identical 1.2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
  22. 22.🔋 How many 1.2 V cells must be joined in series to give 3.6 V?
  23. 23.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  24. 24.🔋 6 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
  25. 25.🔋 How many 1.2 V cells must be joined in series to give 7.2 V?
  26. 26.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
  27. 27.🔋 How many 2 V cells must be joined in series to give 6 V?
  28. 28.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) a smaller voltage (c) no voltage (d) a bigger voltage
  29. 29.🔋 A 3 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
  30. 30.🔋 5 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  31. 31.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  32. 32.🔋 How many 3 V cells must be joined in series to give 24 V?
  33. 33.🔋 2 identical 1.2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
  34. 34.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
  35. 35.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
  36. 36.🔋 8 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  37. 37.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
  38. 38.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
  39. 39.🔋 8 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  40. 40.🔋 5 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =

Answer key

  1. True
  2. two or more cells joined
  3. − (negative)
  4. − (negative)
  5. True
  6. 10.5
  7. 1.5 V
  8. the same voltage
  9. False
  10. 1.5
  11. 10.5
  12. + (positive)
  13. + (positive)
  14. 1.5
  15. 4
  16. 8
  17. True
  18. False
  19. + (positive)
  20. 7.5
  21. 1.2
  22. 3
  23. − (negative)
  24. 6
  25. 6
  26. True
  27. 3
  28. a bigger voltage
  29. 4.5
  30. 6
  31. 3.6
  32. 8
  33. 1.2
  34. True
  35. False
  36. 9.6
  37. False
  38. True
  39. 16
  40. 4.5

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