← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 109 · 40 questions
TalentJR

Remember (Add in a row, share side by side): Series: R total = R1 + R2 + R3 … Parallel, equal resistors: R total = R ÷ number of resistors (two equal → half). Then I = V ÷ R total. Example: 6 V across 4 Ω + 8 Ω = 12 Ω → 0.5 A.

NameDateTime takenScore ___ / 40
  1. 1.🧮 Two resistors in parallel give a total that is … (a) always zero (b) more than either one (c) less than either one (d) their sum
  2. 2.🧮 Resistors of 22 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  3. 3.🧮 A 100 Ω resistor is joined in series with two equal 470 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  4. 4.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 Resistors of 50 Ω, 50 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 Resistors of 33 Ω, 470 Ω, 220 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  7. 7.🧮 A 5.5 V battery is joined to 3 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 Adding another resistor in series makes the total resistance … (a) zero (b) stay the same (c) smaller (d) bigger
  9. 9.🧮 Resistors of 20 Ω, 68 Ω, 33 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 A 4.5 V battery is joined to 8 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  12. 12.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 A 2.8 V battery is joined to 10 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 A 3.6 V battery is joined to 12 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 Resistors of 220 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 A 5.5 V battery is joined to 6 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 A 0.8 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  22. 22.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 Resistors of 100 Ω, 470 Ω, 50 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 An 8 V battery is joined to 6 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  28. 28.🧮 A 470 Ω resistor is joined in series with two equal 220 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  29. 29.🧮 Resistors of 10 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  31. 31.🧮 A 1.4 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  32. 32.🧮 Resistors of 68 Ω, 100 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 A 9 V battery is joined to 3 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 Resistors of 50 Ω, 150 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 Resistors of 47 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 A 47 Ω resistor is joined in series with two equal 40 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  40. 40.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. less than either one
  2. 55
  3. 335
  4. 10
  5. 120
  6. 733
  7. 0.5
  8. bigger
  9. 189
  10. 50
  11. 0.25
  12. 20
  13. 100
  14. 0.2
  15. 0.2
  16. 320
  17. 25
  18. 0.5
  19. 10
  20. 100
  21. 0.1
  22. 110
  23. 688
  24. 25
  25. 50
  26. 100
  27. 1
  28. 580
  29. 480
  30. 20
  31. 0.1
  32. 388
  33. 1
  34. 5
  35. 233
  36. 50
  37. 5
  38. 267
  39. 67
  40. 5

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