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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 565 · 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 “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
  2. 2.🔋 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)? =
  3. 3.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
  4. 4.🔋 What should you do with used-up cells? (a) throw them in a fire (b) bury them in soil (c) cut them open (d) give them for recycling
  5. 5.🔋 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)? =
  6. 6.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  7. 7.🔋 A 3 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  8. 8.🔋 What is a battery? (a) a kind of bulb (b) a switch with a lid (c) two or more cells joined (d) one single wire
  9. 9.True or false: on a cell, “the flat end” means the − (negative) end. (a) False (b) True
  10. 10.🔋 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)? =
  11. 11.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  12. 12.🔋 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)? =
  13. 13.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
  14. 14.🔋 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)? =
  15. 15.🔋 4 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)? =
  16. 16.🔋 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)? =
  17. 17.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
  18. 18.🔋 How many 3 V cells must be joined in series to give 9 V?
  19. 19.🔋 6 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  20. 20.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
  21. 21.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) no voltage (c) the same voltage (d) a bigger voltage
  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.🔋 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)? =
  24. 24.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  25. 25.🔋 5 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  26. 26.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) True (b) False
  27. 27.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
  28. 28.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) the same voltage (c) no voltage (d) double the voltage
  29. 29.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  30. 30.🔋 4 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  31. 31.🔋 How many 2 V cells must be joined in series to give 8 V?
  32. 32.🔋 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)? =
  33. 33.🔋 A 6 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  34. 34.🔋 How many 1.5 V cells must be joined in series to give 10.5 V?
  35. 35.🔋 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)? =
  36. 36.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
  37. 37.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) True (b) False
  38. 38.🔋 5 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  39. 39.🔋 How many 3 V cells must be joined in series to give 21 V?
  40. 40.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True

Answer key

  1. + (positive)
  2. 4.5
  3. False
  4. give them for recycling
  5. 3
  6. + (positive)
  7. 7.5
  8. two or more cells joined
  9. True
  10. 3
  11. − (negative)
  12. 2
  13. True
  14. 4.5
  15. 1.2
  16. 9
  17. False
  18. 3
  19. 18
  20. − (negative)
  21. a bigger voltage
  22. 9
  23. 2
  24. + (positive)
  25. 15
  26. True
  27. False
  28. the same voltage
  29. − (negative)
  30. 12
  31. 4
  32. 1.5
  33. 10.5
  34. 7
  35. 9
  36. False
  37. True
  38. 7.5
  39. 7
  40. True

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