← Cells and batteries lesson New set →

Electronics Worksheet: Cells and Batteries

Electronics lesson 6: Cells and batteries · Set 192 · 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 longer symbol line” means the + (positive) end. (a) False (b) True
  2. 2.🔋 4 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)? =
  3. 3.🔋 What should you do with used-up cells? (a) cut them open (b) bury them in soil (c) give them for recycling (d) throw them in a fire
  4. 4.🔋 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)? =
  5. 5.🔋 How many 3 V cells must be joined in series to give 21 V?
  6. 6.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
  7. 7.🔋 How many 3 V cells must be joined in series to give 24 V?
  8. 8.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 230 V (c) 1.5 V (d) 0.5 V
  9. 9.🔋 What is a battery? (a) a switch with a lid (b) one single wire (c) a kind of bulb (d) two or more cells joined
  10. 10.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
  11. 11.🔋 8 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  12. 12.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
  13. 13.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  14. 14.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
  15. 15.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  16. 16.🔋 5 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  17. 17.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
  18. 18.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  19. 19.🔋 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)? =
  20. 20.🔋 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)? =
  21. 21.🔋 2 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  22. 22.🔋 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)? =
  23. 23.🔋 2 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)? =
  24. 24.🔋 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)? =
  25. 25.🔋 6 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  26. 26.🔋 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)? =
  27. 27.🔋 How many 2 V cells must be joined in series to give 8 V?
  28. 28.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
  29. 29.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) no voltage (c) the same voltage (d) a bigger voltage
  30. 30.🔋 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)? =
  31. 31.🔋 4 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  32. 32.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  33. 33.🔋 7 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  34. 34.🔋 2 identical 2 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 − (negative) end. (a) False (b) True
  36. 36.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
  37. 37.🔋 A 9 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
  38. 38.🔋 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)? =
  39. 39.🔋 A 9 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
  40. 40.🔋 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)? =

Answer key

  1. True
  2. 3
  3. give them for recycling
  4. 1.2
  5. 7
  6. False
  7. 8
  8. 1.5 V
  9. two or more cells joined
  10. True
  11. 9.6
  12. − (negative)
  13. − (negative)
  14. True
  15. + (positive)
  16. 6
  17. False
  18. + (positive)
  19. 18
  20. 9
  21. 2.4
  22. 3
  23. 2
  24. 3
  25. 7.2
  26. 7.5
  27. 4
  28. False
  29. a bigger voltage
  30. 4.5
  31. 6
  32. − (negative)
  33. 10.5
  34. 4
  35. True
  36. False
  37. 10.5
  38. 7.5
  39. 13.5
  40. 9

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