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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 911 · 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.🔋 A 9 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
  3. 3.🔋 6 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)? =
  4. 4.True or false: on a cell, “the flat end” means the − (negative) end. (a) False (b) True
  5. 5.🔋 What is a battery? (a) one single wire (b) a kind of bulb (c) two or more cells joined (d) a switch with a lid
  6. 6.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) a bigger voltage (c) a smaller voltage (d) no voltage
  7. 7.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  8. 8.🔋 What should you do with used-up cells? (a) throw them in a fire (b) cut them open (c) bury them in soil (d) give them for recycling
  9. 9.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  10. 10.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  11. 11.🔋 6 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)? =
  12. 12.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
  13. 13.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
  14. 14.🔋 8 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  15. 15.🔋 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)? =
  16. 16.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
  17. 17.🔋 2 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 end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
  19. 19.🔋 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)? =
  20. 20.🔋 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)? =
  21. 21.🔋 How many 2 V cells must be joined in series to give 16 V?
  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.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  24. 24.🔋 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)? =
  25. 25.🔋 7 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  26. 26.🔋 4 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  27. 27.🔋 How many 1.5 V cells must be joined in series to give 6 V?
  28. 28.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
  29. 29.🔋 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)? =
  30. 30.🔋 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)? =
  31. 31.🔋 How many 3 V cells must be joined in series to give 15 V?
  32. 32.🔋 6 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  33. 33.🔋 5 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)? =
  34. 34.🔋 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)? =
  35. 35.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
  36. 36.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  37. 37.🔋 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)? =
  38. 38.🔋 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)? =
  39. 39.🔋 How many volts does one ordinary torch cell give? (a) 1.5 V (b) 230 V (c) 0.5 V (d) 15 V
  40. 40.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) no voltage (c) the same voltage (d) half the voltage

Answer key

  1. True
  2. 10.5
  3. 1.2
  4. True
  5. two or more cells joined
  6. a bigger voltage
  7. + (positive)
  8. give them for recycling
  9. − (negative)
  10. − (negative)
  11. 2
  12. False
  13. False
  14. 24
  15. 12
  16. False
  17. 4
  18. + (positive)
  19. 2
  20. 9
  21. 8
  22. 9.6
  23. + (positive)
  24. 3
  25. 8.4
  26. 8
  27. 4
  28. True
  29. 6
  30. 18
  31. 5
  32. 9
  33. 3
  34. 4.5
  35. True
  36. 3.6
  37. 4.5
  38. 1.5
  39. 1.5 V
  40. the same voltage

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