← Cells and batteries lesson New set →

Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 227 · 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.🔋 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)? =
  3. 3.🔋 How many 1.5 V cells must be joined in series to give 9 V?
  4. 4.🔋 What should you do with used-up cells? (a) throw them in a fire (b) bury them in soil (c) cut them open (d) give them for recycling
  5. 5.🔋 4 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)? =
  6. 6.🔋 3 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  7. 7.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
  8. 8.🔋 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)? =
  9. 9.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) double the voltage (c) no voltage (d) the same voltage
  10. 10.🔋 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)? =
  11. 11.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  12. 12.🔋 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)? =
  13. 13.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  14. 14.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
  15. 15.🔋 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)? =
  16. 16.🔋 4 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  17. 17.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  18. 18.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) True (b) False
  19. 19.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
  20. 20.🔋 What is a battery? (a) a switch with a lid (b) one single wire (c) two or more cells joined (d) a kind of bulb
  21. 21.🔋 7 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  22. 22.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
  23. 23.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
  24. 24.🔋 How many 2 V cells must be joined in series to give 10 V?
  25. 25.🔋 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)? =
  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.🔋 How many 2 V cells must be joined in series to give 12 V?
  28. 28.🔋 4 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  29. 29.🔋 A 6 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  30. 30.🔋 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)? =
  31. 31.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  32. 32.🔋 7 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  33. 33.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  34. 34.🔋 7 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  35. 35.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
  36. 36.🔋 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)? =
  37. 37.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
  38. 38.🔋 Cells joined + to − in a row (series) give … (a) a bigger voltage (b) the same voltage (c) a smaller voltage (d) no voltage
  39. 39.🔋 How many 3 V cells must be joined in series to give 6 V?
  40. 40.🔋 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)? =

Answer key

  1. − (negative)
  2. 4.5
  3. 6
  4. give them for recycling
  5. 1.5
  6. 9
  7. True
  8. 1.5
  9. the same voltage
  10. 3
  11. − (negative)
  12. 2
  13. + (positive)
  14. False
  15. 1.5
  16. 12
  17. + (positive)
  18. True
  19. False
  20. two or more cells joined
  21. 14
  22. False
  23. False
  24. 5
  25. 18
  26. 1.5
  27. 6
  28. 6
  29. 9
  30. 13.5
  31. 6
  32. 10.5
  33. True
  34. 21
  35. False
  36. 1.2
  37. False
  38. a bigger voltage
  39. 2
  40. 3

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