← Cells and batteries lesson New set →

Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 305 · 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.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
  2. 2.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
  3. 3.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) no voltage (c) double the voltage (d) half the voltage
  4. 4.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  5. 5.🔋 How many 2 V cells must be joined in series to give 6 V?
  6. 6.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  7. 7.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
  8. 8.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
  9. 9.🔋 What is a battery? (a) a kind of bulb (b) two or more cells joined (c) one single wire (d) a switch with a lid
  10. 10.🔋 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)? =
  11. 11.🔋 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)? =
  12. 12.True or false: on a cell, “usually the red wire” means the + (positive) 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 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)? =
  15. 15.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 15 V (c) 1.5 V (d) 230 V
  16. 16.🔋 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)? =
  17. 17.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
  18. 18.🔋 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)? =
  19. 19.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  20. 20.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
  21. 21.🔋 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)? =
  22. 22.🔋 How many 3 V cells must be joined in series to give 9 V?
  23. 23.True or false: on a cell, “the flat end” means the − (negative) end. (a) False (b) True
  24. 24.🔋 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
  25. 25.🔋 7 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  26. 26.🔋 How many 1.5 V cells must be joined in series to give 3 V?
  27. 27.🔋 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)? =
  28. 28.🔋 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)? =
  29. 29.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  30. 30.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) no voltage (c) a bigger voltage (d) a smaller voltage
  31. 31.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
  32. 32.🔋 7 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  33. 33.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 15 V (c) 230 V (d) 1.5 V
  34. 34.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  35. 35.🔋 How many 1.5 V cells must be joined in series to give 4.5 V?
  36. 36.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
  37. 37.🔋 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)? =
  38. 38.🔋 A 6 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
  39. 39.🔋 How many 1.2 V cells must be joined in series to give 2.4 V?
  40. 40.🔋 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)? =

Answer key

  1. False
  2. True
  3. the same voltage
  4. True
  5. 3
  6. − (negative)
  7. False
  8. − (negative)
  9. two or more cells joined
  10. 12
  11. 9
  12. True
  13. + (positive)
  14. 6
  15. 1.5 V
  16. 3
  17. False
  18. 4.5
  19. + (positive)
  20. True
  21. 3
  22. 3
  23. True
  24. give them for recycling
  25. 21
  26. 2
  27. 13.5
  28. 1.2
  29. − (negative)
  30. a bigger voltage
  31. False
  32. 8.4
  33. 1.5 V
  34. + (positive)
  35. 3
  36. False
  37. 18
  38. 7.5
  39. 2
  40. 2

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