← Cells and batteries lesson New set →

Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 705 · 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 +.

NameDateTime takenScore ___ / 40
  1. 1.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  2. 2.🔋 What should you do with used-up cells? (a) bury them in soil (b) give them for recycling (c) throw them in a fire (d) cut them open
  3. 3.🔋 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)? =
  4. 4.🔋 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)? =
  5. 5.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
  6. 6.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  7. 7.🔋 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)? =
  8. 8.🔋 Cells joined + to − in a row (series) give … (a) a bigger voltage (b) no voltage (c) a smaller voltage (d) the same voltage
  9. 9.🔋 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)? =
  10. 10.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  11. 11.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
  12. 12.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 230 V (c) 15 V (d) 1.5 V
  13. 13.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
  14. 14.🔋 How many 1.2 V cells must be joined in series to give 3.6 V?
  15. 15.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
  16. 16.🔋 How many 1.5 V cells must be joined in series to give 4.5 V?
  17. 17.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
  18. 18.🔋 How many 1.5 V cells must be joined in series to give 3 V?
  19. 19.🔋 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)? =
  20. 20.🔋 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)? =
  21. 21.🔋 How many 1.5 V cells must be joined in series to give 10.5 V?
  22. 22.🔋 How many 3 V cells must be joined in series to give 12 V?
  23. 23.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
  24. 24.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  25. 25.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  26. 26.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) no voltage (c) double the voltage (d) the same voltage
  27. 27.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
  28. 28.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
  29. 29.🔋 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)? =
  30. 30.🔋 How many 3 V cells must be joined in series to give 21 V?
  31. 31.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
  32. 32.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
  33. 33.🔋 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)? =
  34. 34.🔋 How many 3 V cells must be joined in series to give 15 V?
  35. 35.🔋 6 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  36. 36.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
  37. 37.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
  38. 38.🔋 A 12 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
  39. 39.🔋 How many 1.5 V cells must be joined in series to give 9 V?
  40. 40.🔋 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)? =

Answer key

  1. − (negative)
  2. give them for recycling
  3. 2
  4. 1.5
  5. True
  6. + (positive)
  7. 3
  8. a bigger voltage
  9. 1.2
  10. + (positive)
  11. True
  12. 1.5 V
  13. False
  14. 3
  15. False
  16. 3
  17. False
  18. 2
  19. 4.5
  20. 3
  21. 7
  22. 4
  23. True
  24. − (negative)
  25. + (positive)
  26. the same voltage
  27. True
  28. False
  29. 4.5
  30. 7
  31. True
  32. False
  33. 6
  34. 5
  35. 12
  36. − (negative)
  37. True
  38. 13.5
  39. 6
  40. 1.5

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids