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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 235 · 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.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
  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 + (positive) end. (a) True (b) False
  4. 4.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  5. 5.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  6. 6.🔋 What is a battery? (a) a switch with a lid (b) a kind of bulb (c) two or more cells joined (d) one single wire
  7. 7.🔋 How many volts does one ordinary torch cell give? (a) 230 V (b) 1.5 V (c) 0.5 V (d) 15 V
  8. 8.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) no voltage (c) the same voltage (d) a bigger voltage
  9. 9.🔋 How many 1.5 V cells must be joined in series to give 10.5 V?
  10. 10.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
  11. 11.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  12. 12.🔋 2 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  13. 13.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  14. 14.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
  15. 15.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
  16. 16.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
  17. 17.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  18. 18.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
  19. 19.🔋 How many 1.5 V cells must be joined in series to give 12 V?
  20. 20.🔋 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)? =
  21. 21.🔋 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)? =
  22. 22.🔋 8 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  23. 23.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
  24. 24.🔋 What should you do with used-up cells? (a) cut them open (b) bury them in soil (c) throw them in a fire (d) give them for recycling
  25. 25.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
  26. 26.🔋 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)? =
  27. 27.🔋 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)? =
  28. 28.🔋 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)? =
  29. 29.🔋 7 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  30. 30.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
  31. 31.🔋 How many 1.5 V cells must be joined in series to give 7.5 V?
  32. 32.🔋 4 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  33. 33.🔋 A 3 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  34. 34.🔋 How many 1.2 V cells must be joined in series to give 2.4 V?
  35. 35.🔋 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)? =
  36. 36.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) half the voltage (c) double the voltage (d) no voltage
  37. 37.🔋 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)? =
  38. 38.🔋 4 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  39. 39.🔋 How many 1.5 V cells must be joined in series to give 4.5 V?
  40. 40.🔋 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)? =

Answer key

  1. True
  2. False
  3. False
  4. − (negative)
  5. 3.6
  6. two or more cells joined
  7. 1.5 V
  8. a bigger voltage
  9. 7
  10. True
  11. + (positive)
  12. 3
  13. + (positive)
  14. + (positive)
  15. True
  16. False
  17. − (negative)
  18. True
  19. 8
  20. 1.2
  21. 7.5
  22. 9.6
  23. False
  24. give them for recycling
  25. False
  26. 2
  27. 3
  28. 9
  29. 8.4
  30. − (negative)
  31. 5
  32. 4.8
  33. 9
  34. 2
  35. 1.5
  36. the same voltage
  37. 9
  38. 8
  39. 3
  40. 4.5

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