← Cells and batteries lesson New set →

Electronics Worksheet: Cells and Batteries

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

Answer key

  1. 9
  2. 3
  3. give them for recycling
  4. 1.5
  5. + (positive)
  6. 15
  7. − (negative)
  8. 7.2
  9. False
  10. 3
  11. False
  12. + (positive)
  13. 2
  14. True
  15. True
  16. + (positive)
  17. 16.5
  18. the same voltage
  19. − (negative)
  20. False
  21. 7
  22. 6
  23. 2
  24. 14
  25. 6
  26. 6
  27. 1.5 V
  28. 1.2
  29. 3.6
  30. 3
  31. two or more cells joined
  32. False
  33. 12
  34. 6
  35. 7.5
  36. 6
  37. 3
  38. 1.2
  39. True
  40. 3

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