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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 457 · 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.🔋 How many 3 V cells must be joined in series to give 18 V?
  2. 2.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) the same voltage (c) no voltage (d) half the voltage
  3. 3.🔋 A 12 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  4. 4.🔋 3 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)? =
  5. 5.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  6. 6.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
  7. 7.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
  8. 8.🔋 How many 1.2 V cells must be joined in series to give 3.6 V?
  9. 9.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) a bigger voltage (c) a smaller voltage (d) no voltage
  10. 10.🔋 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)? =
  11. 11.🔋 5 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  12. 12.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
  13. 13.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
  14. 14.🔋 How many 3 V cells must be joined in series to give 6 V?
  15. 15.🔋 4 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  16. 16.🔋 How many 1.5 V cells must be joined in series to give 12 V?
  17. 17.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  18. 18.🔋 8 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  19. 19.🔋 8 identical 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 1.5 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)? =
  21. 21.🔋 6 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)? =
  22. 22.🔋 How many 2 V cells must be joined in series to give 6 V?
  23. 23.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  24. 24.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
  25. 25.🔋 How many 1.5 V cells must be joined in series to give 6 V?
  26. 26.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  27. 27.🔋 How many volts does one ordinary torch cell give? (a) 230 V (b) 15 V (c) 0.5 V (d) 1.5 V
  28. 28.🔋 4 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)? =
  29. 29.🔋 What is a battery? (a) one single wire (b) a kind of bulb (c) two or more cells joined (d) a switch with a lid
  30. 30.🔋 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)? =
  31. 31.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  32. 32.🔋 How many 2 V cells must be joined in series to give 10 V?
  33. 33.🔋 3 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)? =
  34. 34.🔋 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)? =
  35. 35.🔋 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)? =
  36. 36.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  37. 37.True or false: on a cell, “the flat end” means the − (negative) end. (a) False (b) True
  38. 38.🔋 How many 2 V cells must be joined in series to give 16 V?
  39. 39.🔋 How many 1.2 V cells must be joined in series to give 2.4 V?
  40. 40.🔋 A 12 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =

Answer key

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

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