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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 687 · 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.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 230 V (c) 0.5 V (d) 1.5 V
  2. 2.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  3. 3.🔋 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)? =
  4. 4.🔋 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)? =
  5. 5.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  6. 6.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  7. 7.🔋 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)? =
  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 (+ of one cell to − of the next). What is the total voltage (in volts)? =
  10. 10.🔋 What is a battery? (a) one single wire (b) two or more cells joined (c) a kind of bulb (d) a switch with a lid
  11. 11.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
  12. 12.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
  13. 13.🔋 5 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)? =
  14. 14.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) the same voltage (c) no voltage (d) double the voltage
  15. 15.🔋 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)? =
  16. 16.🔋 A 12 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  17. 17.🔋 How many 1.2 V cells must be joined in series to give 3.6 V?
  18. 18.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
  19. 19.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  20. 20.🔋 How many 2 V cells must be joined in series to give 14 V?
  21. 21.🔋 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)? =
  22. 22.🔋 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)? =
  23. 23.🔋 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)? =
  24. 24.🔋 8 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  25. 25.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
  26. 26.🔋 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)? =
  27. 27.🔋 How many 3 V cells must be joined in series to give 9 V?
  28. 28.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) True (b) False
  29. 29.🔋 2 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  30. 30.🔋 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)? =
  31. 31.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  32. 32.🔋 5 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.🔋 How many 3 V cells must be joined in series to give 24 V?
  34. 34.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  35. 35.🔋 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)? =
  36. 36.🔋 3 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  37. 37.🔋 How many 3 V cells must be joined in series to give 12 V?
  38. 38.🔋 4 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)? =
  39. 39.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  40. 40.🔋 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

Answer key

  1. 1.5 V
  2. + (positive)
  3. 1.2
  4. 1.2
  5. + (positive)
  6. − (negative)
  7. 4.5
  8. False
  9. 6
  10. two or more cells joined
  11. True
  12. False
  13. 1.5
  14. the same voltage
  15. 6
  16. 16.5
  17. 3
  18. True
  19. − (negative)
  20. 7
  21. 9
  22. 9
  23. 1.2
  24. 24
  25. − (negative)
  26. 12
  27. 3
  28. True
  29. 4
  30. 1.5
  31. + (positive)
  32. 6
  33. 8
  34. 3.6
  35. 3
  36. 4.5
  37. 4
  38. 2
  39. 6
  40. give them for recycling

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