← Cells and batteries lesson New set →

Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 386 · 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 “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
  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.🔋 8 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  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.🔋 How many 1.2 V cells must be joined in series to give 2.4 V?
  6. 6.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
  7. 7.🔋 How many 2 V cells must be joined in series to give 14 V?
  8. 8.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
  9. 9.🔋 3 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.🔋 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)? =
  11. 11.🔋 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)? =
  12. 12.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
  13. 13.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
  14. 14.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) half the voltage (c) double the voltage (d) no voltage
  15. 15.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
  16. 16.🔋 A 9 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
  17. 17.🔋 What should you do with used-up cells? (a) throw them in a fire (b) give them for recycling (c) bury them in soil (d) cut them open
  18. 18.🔋 4 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)? =
  19. 19.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  20. 20.🔋 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)? =
  21. 21.🔋 3 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  22. 22.🔋 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)? =
  23. 23.🔋 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)? =
  24. 24.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  25. 25.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
  26. 26.🔋 4 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  27. 27.🔋 What is a battery? (a) a switch with a lid (b) one single wire (c) two or more cells joined (d) a kind of bulb
  28. 28.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  29. 29.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
  30. 30.🔋 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)? =
  31. 31.🔋 A 9 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  32. 32.🔋 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)? =
  33. 33.🔋 4 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)? =
  34. 34.🔋 How many 1.2 V cells must be joined in series to give 6 V?
  35. 35.🔋 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)? =
  36. 36.🔋 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)? =
  37. 37.🔋 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)? =
  38. 38.🔋 Cells joined + to − in a row (series) give … (a) a bigger voltage (b) the same voltage (c) a smaller voltage (d) no voltage
  39. 39.🔋 5 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  40. 40.🔋 7 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =

Answer key

  1. − (negative)
  2. 2
  3. 9.6
  4. 7.5
  5. 2
  6. True
  7. 7
  8. False
  9. 4.5
  10. 9
  11. 2
  12. True
  13. False
  14. the same voltage
  15. False
  16. 10.5
  17. give them for recycling
  18. 3
  19. + (positive)
  20. 3
  21. 9
  22. 13.5
  23. 3
  24. − (negative)
  25. True
  26. 6
  27. two or more cells joined
  28. + (positive)
  29. True
  30. 7.5
  31. 13.5
  32. 3
  33. 1.5
  34. 5
  35. 1.2
  36. 15
  37. 1.2
  38. a bigger voltage
  39. 7.5
  40. 10.5

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