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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 48 · 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 +.

NameDateTime takenScore ___ / 40
  1. 1.🔋 How many volts does one ordinary torch cell give? (a) 230 V (b) 1.5 V (c) 15 V (d) 0.5 V
  2. 2.🔋 8 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  3. 3.🔋 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)? =
  4. 4.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  5. 5.🔋 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)? =
  6. 6.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
  7. 7.🔋 2 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  8. 8.🔋 A 3 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  9. 9.🔋 7 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)? =
  10. 10.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
  11. 11.🔋 How many 1.5 V cells must be joined in series to give 9 V?
  12. 12.🔋 How many 3 V cells must be joined in series to give 18 V?
  13. 13.🔋 How many 1.5 V cells must be joined in series to give 6 V?
  14. 14.🔋 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)? =
  15. 15.🔋 How many 1.2 V cells must be joined in series to give 9.6 V?
  16. 16.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  17. 17.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
  18. 18.🔋 5 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  19. 19.🔋 A 9 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  20. 20.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
  21. 21.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
  22. 22.🔋 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)? =
  23. 23.🔋 How many 2 V cells must be joined in series to give 8 V?
  24. 24.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
  25. 25.🔋 How many 1.2 V cells must be joined in series to give 4.8 V?
  26. 26.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) the same voltage (c) no voltage (d) double the voltage
  27. 27.🔋 2 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  28. 28.🔋 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)? =
  29. 29.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) no voltage (c) a smaller voltage (d) a bigger voltage
  30. 30.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  31. 31.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  32. 32.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
  33. 33.🔋 3 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  34. 34.🔋 4 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)? =
  35. 35.🔋 What is a battery? (a) a switch with a lid (b) a kind of bulb (c) one single wire (d) two or more cells joined
  36. 36.🔋 How many 1.5 V cells must be joined in series to give 7.5 V?
  37. 37.🔋 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)? =
  38. 38.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
  39. 39.🔋 4 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  40. 40.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True

Answer key

  1. 1.5 V
  2. 24
  3. 10.5
  4. + (positive)
  5. 1.2
  6. False
  7. 6
  8. 9
  9. 7.5
  10. False
  11. 6
  12. 6
  13. 4
  14. 1.5
  15. 8
  16. 6
  17. True
  18. 6
  19. 13.5
  20. − (negative)
  21. False
  22. 4.5
  23. 4
  24. False
  25. 4
  26. the same voltage
  27. 2.4
  28. 6
  29. a bigger voltage
  30. + (positive)
  31. − (negative)
  32. True
  33. 9
  34. 3
  35. two or more cells joined
  36. 5
  37. 1.2
  38. True
  39. 12
  40. False

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