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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 211 · 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) − (negative) (b) + (positive)
  2. 2.🔋 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)? =
  3. 3.🔋 What should you do with used-up cells? (a) give them for recycling (b) cut them open (c) throw them in a fire (d) bury them in soil
  4. 4.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  5. 5.🔋 What is a battery? (a) two or more cells joined (b) a switch with a lid (c) one single wire (d) a kind of bulb
  6. 6.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  7. 7.🔋 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)? =
  8. 8.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
  9. 9.🔋 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)? =
  10. 10.🔋 5 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  11. 11.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
  12. 12.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  13. 13.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
  14. 14.🔋 6 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  15. 15.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
  16. 16.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  17. 17.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
  18. 18.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
  19. 19.🔋 7 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  20. 20.🔋 How many 1.5 V cells must be joined in series to give 3 V?
  21. 21.🔋 How many volts does one ordinary torch cell give? (a) 1.5 V (b) 0.5 V (c) 15 V (d) 230 V
  22. 22.🔋 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)? =
  23. 23.🔋 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)? =
  24. 24.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  25. 25.🔋 How many 1.2 V cells must be joined in series to give 3.6 V?
  26. 26.🔋 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)? =
  27. 27.🔋 2 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  28. 28.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
  29. 29.🔋 How many 1.2 V cells must be joined in series to give 9.6 V?
  30. 30.🔋 5 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  31. 31.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
  32. 32.🔋 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)? =
  33. 33.🔋 4 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  34. 34.🔋 4 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  35. 35.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  36. 36.🔋 How many 1.2 V cells must be joined in series to give 2.4 V?
  37. 37.🔋 2 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  38. 38.🔋 6 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  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.🔋 How many 1.2 V cells must be joined in series to give 4.8 V?

Answer key

  1. − (negative)
  2. 3
  3. give them for recycling
  4. True
  5. two or more cells joined
  6. + (positive)
  7. 1.5
  8. False
  9. 3
  10. 7.5
  11. True
  12. 3.6
  13. False
  14. 7.2
  15. − (negative)
  16. + (positive)
  17. False
  18. False
  19. 14
  20. 2
  21. 1.5 V
  22. 2
  23. 9
  24. + (positive)
  25. 3
  26. 10.5
  27. 2.4
  28. False
  29. 8
  30. 6
  31. False
  32. 3
  33. 12
  34. 6
  35. − (negative)
  36. 2
  37. 3
  38. 12
  39. 4.5
  40. 4

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