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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 118 · 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.🔋 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)? =
  2. 2.🔋 6 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  3. 3.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  4. 4.🔋 6 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  5. 5.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
  6. 6.🔋 4 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  7. 7.🔋 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)? =
  8. 8.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
  9. 9.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
  10. 10.🔋 How many 3 V cells must be joined in series to give 12 V?
  11. 11.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
  12. 12.🔋 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)? =
  13. 13.🔋 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)? =
  14. 14.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
  15. 15.🔋 A 6 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  16. 16.🔋 What should you do with used-up cells? (a) cut them open (b) throw them in a fire (c) give them for recycling (d) bury them in soil
  17. 17.🔋 How many 1.5 V cells must be joined in series to give 4.5 V?
  18. 18.🔋 4 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)? =
  19. 19.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  20. 20.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  21. 21.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
  22. 22.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) double the voltage (c) the same voltage (d) no voltage
  23. 23.🔋 5 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  24. 24.🔋 How many 2 V cells must be joined in series to give 8 V?
  25. 25.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
  26. 26.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
  27. 27.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  28. 28.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
  29. 29.🔋 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)? =
  30. 30.🔋 2 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  31. 31.🔋 Cells joined + to − in a row (series) give … (a) a bigger voltage (b) no voltage (c) the same voltage (d) a smaller voltage
  32. 32.🔋 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)? =
  33. 33.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
  34. 34.🔋 2 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  35. 35.🔋 5 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  36. 36.🔋 A 12 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
  37. 37.🔋 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)? =
  38. 38.🔋 4 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  39. 39.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  40. 40.🔋 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)? =

Answer key

  1. 1.5
  2. 9
  3. + (positive)
  4. 12
  5. False
  6. 6
  7. 1.2
  8. False
  9. True
  10. 4
  11. False
  12. 4.5
  13. 9
  14. − (negative)
  15. 12
  16. give them for recycling
  17. 3
  18. 2
  19. + (positive)
  20. − (negative)
  21. False
  22. the same voltage
  23. 7.5
  24. 4
  25. False
  26. False
  27. + (positive)
  28. True
  29. 3
  30. 3
  31. a bigger voltage
  32. 2
  33. True
  34. 2.4
  35. 10
  36. 13.5
  37. 4.5
  38. 4.8
  39. − (negative)
  40. 7.5

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