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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 276 · 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.🔋 8 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)? =
  2. 2.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 0.5 V (c) 1.5 V (d) 230 V
  3. 3.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
  4. 4.🔋 6 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)? =
  5. 5.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
  6. 6.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
  7. 7.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
  8. 8.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  9. 9.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
  10. 10.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  11. 11.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) half the voltage (c) the same voltage (d) no voltage
  12. 12.🔋 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)? =
  13. 13.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
  14. 14.🔋 Cells joined + to − in a row (series) give … (a) no voltage (b) a smaller voltage (c) the same voltage (d) a bigger voltage
  15. 15.🔋 5 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  16. 16.🔋 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)? =
  17. 17.🔋 How many 2 V cells must be joined in series to give 10 V?
  18. 18.🔋 3 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.🔋 2 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  20. 20.🔋 3 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)? =
  21. 21.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
  22. 22.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
  23. 23.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  24. 24.🔋 5 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  25. 25.🔋 4 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  26. 26.🔋 A 3 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  27. 27.🔋 How many 2 V cells must be joined in series to give 6 V?
  28. 28.🔋 How many 1.2 V cells must be joined in series to give 4.8 V?
  29. 29.🔋 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)? =
  30. 30.🔋 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)? =
  31. 31.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
  32. 32.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
  33. 33.🔋 How many 2 V cells must be joined in series to give 4 V?
  34. 34.🔋 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)? =
  35. 35.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
  36. 36.🔋 How many 3 V cells must be joined in series to give 9 V?
  37. 37.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
  38. 38.🔋 5 identical 2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
  39. 39.🔋 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)? =
  40. 40.🔋 A 6 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =

Answer key

  1. 9
  2. 1.5 V
  3. True
  4. 1.2
  5. False
  6. + (positive)
  7. − (negative)
  8. + (positive)
  9. False
  10. − (negative)
  11. the same voltage
  12. 1.5
  13. False
  14. a bigger voltage
  15. 7.5
  16. 7.5
  17. 5
  18. 3.6
  19. 2.4
  20. 1.2
  21. True
  22. True
  23. − (negative)
  24. 6
  25. 6
  26. 7.5
  27. 3
  28. 4
  29. 6
  30. 9
  31. False
  32. True
  33. 2
  34. 4.5
  35. False
  36. 3
  37. False
  38. 2
  39. 13.5
  40. 9

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