← Cells and batteries lesson New set →

Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 349 · 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.🔋 How many 1.5 V cells must be joined in series to give 10.5 V?
  2. 2.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
  3. 3.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  4. 4.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) half the voltage (c) no voltage (d) the same voltage
  5. 5.🔋 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)? =
  6. 6.🔋 4 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  7. 7.🔋 How many 1.2 V cells must be joined in series to give 8.4 V?
  8. 8.🔋 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)? =
  9. 9.🔋 5 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  10. 10.🔋 What should you do with used-up cells? (a) give them for recycling (b) throw them in a fire (c) bury them in soil (d) cut them open
  11. 11.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
  12. 12.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
  13. 13.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
  14. 14.🔋 6 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  15. 15.🔋 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)? =
  16. 16.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  17. 17.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
  18. 18.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  19. 19.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  20. 20.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 15 V (c) 230 V (d) 1.5 V
  21. 21.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
  22. 22.🔋 5 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.🔋 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)? =
  24. 24.🔋 How many 1.2 V cells must be joined in series to give 4.8 V?
  25. 25.🔋 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)? =
  26. 26.🔋 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)? =
  27. 27.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) False (b) True
  28. 28.🔋 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)? =
  29. 29.🔋 7 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  30. 30.🔋 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)? =
  31. 31.🔋 How many 2 V cells must be joined in series to give 8 V?
  32. 32.🔋 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)? =
  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.🔋 How many 2 V cells must be joined in series to give 12 V?
  35. 35.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  36. 36.🔋 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)? =
  37. 37.🔋 5 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.🔋 How many 1.2 V cells must be joined in series to give 3.6 V?
  39. 39.🔋 2 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.🔋 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)? =

Answer key

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

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