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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 742 · 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.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) a bigger voltage (c) the same voltage (d) no voltage
  2. 2.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
  3. 3.🔋 7 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  4. 4.🔋 What is a battery? (a) a kind of bulb (b) a switch with a lid (c) one single wire (d) two or more cells joined
  5. 5.🔋 5 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  6. 6.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
  7. 7.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  8. 8.🔋 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)? =
  9. 9.🔋 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)? =
  10. 10.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
  11. 11.🔋 2 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  12. 12.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
  13. 13.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) no voltage (c) half the voltage (d) double the voltage
  14. 14.🔋 What should you do with used-up cells? (a) bury them in soil (b) cut them open (c) throw them in a fire (d) give them for recycling
  15. 15.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
  16. 16.🔋 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)? =
  17. 17.🔋 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)? =
  18. 18.🔋 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)? =
  19. 19.🔋 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)? =
  20. 20.🔋 How many 1.2 V cells must be joined in series to give 7.2 V?
  21. 21.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  22. 22.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  23. 23.🔋 How many 1.2 V cells must be joined in series to give 8.4 V?
  24. 24.🔋 3 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  25. 25.🔋 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)? =
  26. 26.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 15 V (c) 230 V (d) 1.5 V
  27. 27.🔋 How many 2 V cells must be joined in series to give 12 V?
  28. 28.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
  29. 29.🔋 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)? =
  30. 30.🔋 2 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.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  32. 32.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
  33. 33.🔋 How many 1.2 V cells must be joined in series to give 9.6 V?
  34. 34.🔋 4 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)? =
  35. 35.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
  36. 36.🔋 8 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  37. 37.🔋 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)? =
  38. 38.🔋 How many 2 V cells must be joined in series to give 10 V?
  39. 39.🔋 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)? =
  40. 40.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =

Answer key

  1. a bigger voltage
  2. False
  3. 8.4
  4. two or more cells joined
  5. 15
  6. False
  7. + (positive)
  8. 9
  9. 1.5
  10. − (negative)
  11. 4
  12. False
  13. the same voltage
  14. give them for recycling
  15. True
  16. 9
  17. 3
  18. 9
  19. 10.5
  20. 6
  21. + (positive)
  22. True
  23. 7
  24. 4.5
  25. 13.5
  26. 1.5 V
  27. 6
  28. True
  29. 4.5
  30. 2.4
  31. − (negative)
  32. True
  33. 8
  34. 1.2
  35. + (positive)
  36. 12
  37. 10.5
  38. 5
  39. 7.5
  40. 6

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