← Cells and batteries lesson New set →

Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 5 · 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.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
  3. 3.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
  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, “usually the black wire” means the + (positive) end. (a) False (b) True
  6. 6.🔋 How many 1.5 V cells must be joined in series to give 3 V?
  7. 7.🔋 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)? =
  8. 8.🔋 What is a battery? (a) a kind of bulb (b) one single wire (c) a switch with a lid (d) two or more cells joined
  9. 9.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) False (b) True
  10. 10.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
  11. 11.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
  12. 12.🔋 3 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)? =
  13. 13.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  14. 14.🔋 How many 3 V cells must be joined in series to give 21 V?
  15. 15.🔋 How many 3 V cells must be joined in series to give 12 V?
  16. 16.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  17. 17.🔋 Identical cells side by side (in parallel) give … (a) no voltage (b) the same voltage (c) half the voltage (d) double the voltage
  18. 18.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) a bigger voltage (c) the same voltage (d) no voltage
  19. 19.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 15 V (c) 230 V (d) 1.5 V
  20. 20.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
  21. 21.🔋 4 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  22. 22.🔋 2 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)? =
  23. 23.🔋 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)? =
  24. 24.🔋 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)? =
  25. 25.🔋 How many 1.2 V cells must be joined in series to give 6 V?
  26. 26.🔋 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)? =
  27. 27.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
  28. 28.🔋 2 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.🔋 How many 1.5 V cells must be joined in series to give 4.5 V?
  30. 30.🔋 How many 1.2 V cells must be joined in series to give 7.2 V?
  31. 31.🔋 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)? =
  32. 32.🔋 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)? =
  33. 33.🔋 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)? =
  34. 34.🔋 5 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  35. 35.🔋 What should you do with used-up cells? (a) give them for recycling (b) bury them in soil (c) throw them in a fire (d) cut them open
  36. 36.🔋 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)? =
  37. 37.🔋 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)? =
  38. 38.🔋 7 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  39. 39.🔋 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)? =
  40. 40.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)

Answer key

  1. − (negative)
  2. True
  3. True
  4. 7.5
  5. False
  6. 2
  7. 13.5
  8. two or more cells joined
  9. False
  10. True
  11. True
  12. 1.2
  13. − (negative)
  14. 7
  15. 4
  16. + (positive)
  17. the same voltage
  18. a bigger voltage
  19. 1.5 V
  20. True
  21. 4.8
  22. 1.5
  23. 10.5
  24. 15
  25. 5
  26. 1.5
  27. + (positive)
  28. 2.4
  29. 3
  30. 6
  31. 2
  32. 3
  33. 1.2
  34. 10
  35. give them for recycling
  36. 13.5
  37. 3
  38. 21
  39. 9
  40. + (positive)

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