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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 69 · 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 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  2. 2.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
  3. 3.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
  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.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
  6. 6.🔋 How many 2 V cells must be joined in series to give 14 V?
  7. 7.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  8. 8.🔋 Cells joined + to − in a row (series) give … (a) a bigger voltage (b) a smaller voltage (c) the same voltage (d) no voltage
  9. 9.🔋 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)? =
  10. 10.🔋 4 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.🔋 How many 2 V cells must be joined in series to give 8 V?
  12. 12.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  13. 13.🔋 What is a battery? (a) a switch with a lid (b) one single wire (c) a kind of bulb (d) two or more cells joined
  14. 14.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  15. 15.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  16. 16.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
  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.🔋 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)? =
  19. 19.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  20. 20.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  21. 21.🔋 7 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  22. 22.🔋 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)? =
  23. 23.🔋 2 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)? =
  24. 24.🔋 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)? =
  25. 25.🔋 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)? =
  26. 26.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  27. 27.🔋 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)? =
  28. 28.🔋 7 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  29. 29.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) False (b) True
  30. 30.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
  31. 31.🔋 5 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)? =
  32. 32.🔋 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)? =
  33. 33.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
  34. 34.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
  35. 35.🔋 2 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  36. 36.🔋 How many 1.2 V cells must be joined in series to give 4.8 V?
  37. 37.🔋 How many 1.2 V cells must be joined in series to give 6 V?
  38. 38.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
  39. 39.🔋 How many 2 V cells must be joined in series to give 4 V?
  40. 40.🔋 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)? =

Answer key

  1. 6
  2. False
  3. True
  4. 1.5
  5. − (negative)
  6. 7
  7. − (negative)
  8. a bigger voltage
  9. 3
  10. 4.8
  11. 4
  12. − (negative)
  13. two or more cells joined
  14. 6
  15. True
  16. False
  17. 3
  18. 4.5
  19. + (positive)
  20. + (positive)
  21. 8.4
  22. 9
  23. 2
  24. 7.5
  25. 6
  26. + (positive)
  27. 4.5
  28. 10.5
  29. False
  30. True
  31. 1.5
  32. 1.5
  33. False
  34. True
  35. 2.4
  36. 4
  37. 5
  38. False
  39. 2
  40. 3

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