← Cells and batteries lesson New set →

Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 681 · 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 red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  2. 2.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
  3. 3.🔋 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)? =
  4. 4.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) no voltage (c) half the voltage (d) the same voltage
  5. 5.🔋 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)? =
  6. 6.🔋 2 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.🔋 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)? =
  8. 8.🔋 6 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)? =
  9. 9.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  10. 10.🔋 How many 2 V cells must be joined in series to give 10 V?
  11. 11.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 0.5 V (c) 230 V (d) 1.5 V
  12. 12.🔋 What should you do with used-up cells? (a) give them for recycling (b) cut them open (c) bury them in soil (d) throw them in a fire
  13. 13.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
  14. 14.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  15. 15.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
  16. 16.🔋 What is a battery? (a) two or more cells joined (b) a kind of bulb (c) one single wire (d) a switch with a lid
  17. 17.🔋 How many 1.5 V cells must be joined in series to give 6 V?
  18. 18.🔋 A 3 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  19. 19.🔋 7 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  20. 20.🔋 2 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  21. 21.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
  22. 22.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  23. 23.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) a smaller voltage (c) no voltage (d) a bigger voltage
  24. 24.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  25. 25.🔋 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)? =
  26. 26.🔋 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)? =
  27. 27.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) True (b) False
  28. 28.🔋 How many 2 V cells must be joined in series to give 6 V?
  29. 29.🔋 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)? =
  30. 30.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  31. 31.🔋 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)? =
  32. 32.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
  33. 33.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
  34. 34.🔋 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)? =
  35. 35.🔋 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)? =
  36. 36.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
  37. 37.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
  38. 38.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
  39. 39.🔋 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)? =
  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. + (positive)
  2. False
  3. 3
  4. the same voltage
  5. 4.5
  6. 3
  7. 9
  8. 3
  9. + (positive)
  10. 5
  11. 1.5 V
  12. give them for recycling
  13. False
  14. + (positive)
  15. − (negative)
  16. two or more cells joined
  17. 4
  18. 9
  19. 21
  20. 4
  21. False
  22. True
  23. a bigger voltage
  24. − (negative)
  25. 1.2
  26. 2
  27. True
  28. 3
  29. 7.5
  30. − (negative)
  31. 6
  32. False
  33. True
  34. 1.5
  35. 4.5
  36. False
  37. False
  38. True
  39. 2
  40. 3

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