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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 42 · 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.🔋 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)? =
  2. 2.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
  3. 3.🔋 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)? =
  4. 4.🔋 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)? =
  5. 5.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  6. 6.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  7. 7.🔋 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)? =
  8. 8.🔋 4 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  9. 9.🔋 Cells joined + to − in a row (series) give … (a) a bigger voltage (b) the same voltage (c) no voltage (d) a smaller voltage
  10. 10.🔋 6 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 − (negative) end. (a) False (b) True
  12. 12.🔋 How many 1.5 V cells must be joined in series to give 9 V?
  13. 13.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
  14. 14.🔋 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)? =
  15. 15.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
  16. 16.🔋 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)? =
  17. 17.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
  18. 18.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  19. 19.🔋 How many 1.5 V cells must be joined in series to give 10.5 V?
  20. 20.🔋 6 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  21. 21.🔋 How many 3 V cells must be joined in series to give 24 V?
  22. 22.🔋 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)? =
  23. 23.🔋 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)? =
  24. 24.🔋 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
  25. 25.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  26. 26.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
  27. 27.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) False (b) True
  28. 28.🔋 3 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  29. 29.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  30. 30.🔋 7 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  31. 31.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  32. 32.🔋 What should you do with used-up cells? (a) cut them open (b) give them for recycling (c) bury them in soil (d) throw them in a fire
  33. 33.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
  34. 34.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) double the voltage (c) the same voltage (d) no voltage
  35. 35.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 230 V (c) 1.5 V (d) 15 V
  36. 36.🔋 3 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)? =
  37. 37.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
  38. 38.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
  39. 39.🔋 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)? =
  40. 40.🔋 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)? =

Answer key

  1. 12
  2. True
  3. 15
  4. 4.5
  5. + (positive)
  6. 3.6
  7. 15
  8. 8
  9. a bigger voltage
  10. 1.5
  11. False
  12. 6
  13. False
  14. 1.2
  15. False
  16. 2
  17. False
  18. + (positive)
  19. 7
  20. 7.2
  21. 8
  22. 4.5
  23. 1.2
  24. two or more cells joined
  25. − (negative)
  26. − (negative)
  27. False
  28. 9
  29. + (positive)
  30. 14
  31. − (negative)
  32. give them for recycling
  33. False
  34. the same voltage
  35. 1.5 V
  36. 1.2
  37. True
  38. True
  39. 1.5
  40. 9

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