← Cells and batteries lesson New set →

Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 290 · 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, “the shorter symbol line” means the + (positive) end. (a) True (b) False
  2. 2.🔋 How many 3 V cells must be joined in series to give 12 V?
  3. 3.🔋 How many 2 V cells must be joined in series to give 12 V?
  4. 4.🔋 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)? =
  5. 5.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  6. 6.🔋 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)? =
  7. 7.🔋 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)? =
  8. 8.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
  9. 9.🔋 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)? =
  10. 10.🔋 How many 1.5 V cells must be joined in series to give 6 V?
  11. 11.🔋 How many 1.2 V cells must be joined in series to give 4.8 V?
  12. 12.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) no voltage (c) double the voltage (d) half the voltage
  13. 13.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
  14. 14.🔋 8 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  15. 15.🔋 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)? =
  16. 16.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
  17. 17.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  18. 18.🔋 2 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  19. 19.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  20. 20.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
  21. 21.🔋 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)? =
  22. 22.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  23. 23.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  24. 24.🔋 How many 1.5 V cells must be joined in series to give 9 V?
  25. 25.🔋 What is a battery? (a) a kind of bulb (b) one single wire (c) two or more cells joined (d) a switch with a lid
  26. 26.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
  27. 27.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  28. 28.🔋 6 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.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
  30. 30.🔋 2 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  31. 31.🔋 What should you do with used-up cells? (a) cut them open (b) give them for recycling (c) bury them in soil (d) throw them in a fire
  32. 32.🔋 How many 1.5 V cells must be joined in series to give 3 V?
  33. 33.🔋 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)? =
  34. 34.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
  35. 35.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) True (b) False
  36. 36.🔋 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)? =
  37. 37.🔋 Cells joined + to − in a row (series) give … (a) a bigger voltage (b) no voltage (c) a smaller voltage (d) the same voltage
  38. 38.True or false: on a cell, “the flat end” means the − (negative) end. (a) False (b) True
  39. 39.🔋 How many 3 V cells must be joined in series to give 15 V?
  40. 40.🔋 2 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =

Answer key

  1. False
  2. 4
  3. 6
  4. 1.2
  5. − (negative)
  6. 6
  7. 3
  8. False
  9. 2
  10. 4
  11. 4
  12. the same voltage
  13. + (positive)
  14. 24
  15. 3
  16. − (negative)
  17. − (negative)
  18. 6
  19. 3.6
  20. True
  21. 3
  22. + (positive)
  23. 6
  24. 6
  25. two or more cells joined
  26. True
  27. + (positive)
  28. 1.2
  29. True
  30. 3
  31. give them for recycling
  32. 2
  33. 15
  34. True
  35. True
  36. 1.5
  37. a bigger voltage
  38. True
  39. 5
  40. 2.4

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