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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 739 · 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 + (positive) end. (a) True (b) False
  2. 2.🔋 6 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  3. 3.🔋 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
  4. 4.🔋 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)? =
  5. 5.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
  6. 6.🔋 2 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.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
  8. 8.🔋 How many 2 V cells must be joined in series to give 12 V?
  9. 9.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
  10. 10.🔋 5 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  11. 11.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  12. 12.🔋 3 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  13. 13.🔋 How many 2 V cells must be joined in series to give 6 V?
  14. 14.🔋 What should you do with used-up cells? (a) throw them in a fire (b) bury them in soil (c) cut them open (d) give them for recycling
  15. 15.🔋 4 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)? =
  16. 16.🔋 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)? =
  17. 17.🔋 2 identical 3 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
  18. 18.🔋 4 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  19. 19.🔋 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)? =
  20. 20.🔋 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)? =
  21. 21.🔋 2 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  22. 22.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
  23. 23.🔋 7 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  24. 24.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
  25. 25.🔋 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)? =
  26. 26.🔋 How many 1.2 V cells must be joined in series to give 8.4 V?
  27. 27.🔋 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)? =
  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.🔋 How many 1.2 V cells must be joined in series to give 4.8 V?
  30. 30.🔋 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)? =
  31. 31.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  32. 32.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) no voltage (c) double the voltage (d) the same voltage
  33. 33.🔋 6 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  34. 34.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
  35. 35.🔋 A 9 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  36. 36.🔋 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)? =
  37. 37.🔋 5 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  38. 38.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  39. 39.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
  40. 40.🔋 A 9 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. False
  2. 18
  3. two or more cells joined
  4. 1.5
  5. False
  6. 3
  7. True
  8. 6
  9. True
  10. 6
  11. − (negative)
  12. 9
  13. 3
  14. give them for recycling
  15. 1.5
  16. 2
  17. 3
  18. 8
  19. 7.5
  20. 1.2
  21. 4
  22. False
  23. 8.4
  24. False
  25. 4.5
  26. 7
  27. 1.2
  28. 6
  29. 4
  30. 10.5
  31. − (negative)
  32. the same voltage
  33. 9
  34. + (positive)
  35. 15
  36. 3
  37. 10
  38. + (positive)
  39. − (negative)
  40. 12

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