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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 302 · 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.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) half the voltage (c) the same voltage (d) no voltage
  2. 2.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) False (b) True
  3. 3.🔋 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)? =
  4. 4.🔋 3 identical 3 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, “the end with a bump” means the − (negative) end. (a) True (b) False
  6. 6.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  7. 7.🔋 3 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  8. 8.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
  9. 9.🔋 5 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  10. 10.🔋 3 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)? =
  11. 11.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  12. 12.🔋 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)? =
  13. 13.🔋 Cells joined + to − in a row (series) give … (a) a bigger voltage (b) the same voltage (c) a smaller voltage (d) no voltage
  14. 14.🔋 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)? =
  15. 15.🔋 2 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.🔋 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)? =
  17. 17.🔋 5 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  18. 18.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  19. 19.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
  20. 20.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  21. 21.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  22. 22.🔋 How many 2 V cells must be joined in series to give 10 V?
  23. 23.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
  24. 24.🔋 What is a battery? (a) one single wire (b) a switch with a lid (c) a kind of bulb (d) two or more cells joined
  25. 25.🔋 How many 2 V cells must be joined in series to give 8 V?
  26. 26.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
  27. 27.🔋 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)? =
  28. 28.🔋 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)? =
  29. 29.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
  30. 30.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  31. 31.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
  32. 32.🔋 How many 2 V cells must be joined in series to give 12 V?
  33. 33.🔋 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)? =
  34. 34.🔋 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)? =
  35. 35.🔋 How many 1.5 V cells must be joined in series to give 7.5 V?
  36. 36.🔋 How many 3 V cells must be joined in series to give 24 V?
  37. 37.🔋 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)? =
  38. 38.🔋 How many 3 V cells must be joined in series to give 18 V?
  39. 39.🔋 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)? =
  40. 40.🔋 5 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =

Answer key

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

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