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Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 385 · 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, “usually the black wire” means the − (negative) end. (a) False (b) True
  2. 2.🔋 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)? =
  3. 3.🔋 What is a battery? (a) a kind of bulb (b) one single wire (c) two or more cells joined (d) a switch with a lid
  4. 4.🔋 7 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)? =
  5. 5.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
  6. 6.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
  7. 7.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  8. 8.🔋 3 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)? =
  9. 9.🔋 A 9 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  10. 10.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  11. 11.🔋 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)? =
  12. 12.🔋 4 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.🔋 How many 1.5 V cells must be joined in series to give 3 V?
  14. 14.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  15. 15.🔋 How many 1.2 V cells must be joined in series to give 4.8 V?
  16. 16.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  17. 17.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) False (b) True
  18. 18.🔋 Cells joined + to − in a row (series) give … (a) no voltage (b) a bigger voltage (c) a smaller voltage (d) the same voltage
  19. 19.🔋 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)? =
  20. 20.🔋 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)? =
  21. 21.🔋 How many 1.5 V cells must be joined in series to give 4.5 V?
  22. 22.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) True (b) False
  23. 23.🔋 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)? =
  24. 24.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
  25. 25.🔋 What should you do with used-up cells? (a) throw them in a fire (b) give them for recycling (c) cut them open (d) bury them in soil
  26. 26.🔋 8 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  27. 27.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
  28. 28.🔋 6 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  29. 29.🔋 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)? =
  30. 30.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
  31. 31.🔋 7 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  32. 32.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  33. 33.🔋 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)? =
  34. 34.🔋 2 identical 3 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 “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  36. 36.🔋 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)? =
  37. 37.🔋 3 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)? =
  38. 38.🔋 How many 2 V cells must be joined in series to give 4 V?
  39. 39.🔋 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)? =
  40. 40.🔋 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)? =

Answer key

  1. True
  2. 2
  3. two or more cells joined
  4. 7.5
  5. True
  6. False
  7. + (positive)
  8. 2
  9. 15
  10. − (negative)
  11. 3
  12. 6
  13. 2
  14. + (positive)
  15. 4
  16. True
  17. False
  18. a bigger voltage
  19. 7.5
  20. 10.5
  21. 3
  22. True
  23. 1.5
  24. − (negative)
  25. give them for recycling
  26. 16
  27. False
  28. 7.2
  29. 1.2
  30. False
  31. 21
  32. − (negative)
  33. 18
  34. 6
  35. + (positive)
  36. 1.2
  37. 3
  38. 2
  39. 3
  40. 1.2

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