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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 266 · 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.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  2. 2.🔋 5 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  3. 3.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
  4. 4.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  5. 5.🔋 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)? =
  6. 6.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  7. 7.🔋 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)? =
  8. 8.🔋 6 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  9. 9.🔋 6 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)? =
  10. 10.🔋 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)? =
  11. 11.🔋 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)? =
  12. 12.🔋 What should you do with used-up cells? (a) give them for recycling (b) throw them in a fire (c) bury them in soil (d) cut them open
  13. 13.🔋 6 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  14. 14.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
  15. 15.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
  16. 16.🔋 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)? =
  17. 17.🔋 7 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  18. 18.🔋 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)? =
  19. 19.🔋 Cells joined + to − in a row (series) give … (a) no voltage (b) a smaller voltage (c) a bigger voltage (d) the same voltage
  20. 20.🔋 2 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  21. 21.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
  22. 22.🔋 A 3 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  23. 23.🔋 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)? =
  24. 24.🔋 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)? =
  25. 25.🔋 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)? =
  26. 26.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
  27. 27.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
  28. 28.🔋 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)? =
  29. 29.🔋 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)? =
  30. 30.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) double the voltage (c) half the voltage (d) no voltage
  31. 31.True or false: on a cell, “the flat end” means the − (negative) end. (a) False (b) True
  32. 32.🔋 What is a battery? (a) a kind of bulb (b) one single wire (c) a switch with a lid (d) two or more cells joined
  33. 33.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  34. 34.🔋 How many 2 V cells must be joined in series to give 6 V?
  35. 35.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
  36. 36.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  37. 37.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 1.5 V (c) 15 V (d) 230 V
  38. 38.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  39. 39.🔋 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)? =
  40. 40.🔋 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)? =

Answer key

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

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