← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 648 · 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 equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  2. 2.🧮 A 4.5 V battery is joined to 10 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  3. 3.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Resistors of 50 Ω, 22 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  5. 5.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 Two resistors in parallel give a total that is … (a) more than either one (b) their sum (c) always zero (d) less than either one
  7. 7.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) smaller (c) zero (d) bigger
  8. 8.🧮 A 1.6 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  9. 9.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 A 330 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)?
  11. 11.🧮 A 68 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)?
  12. 12.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Resistors of 470 Ω, 330 Ω, 20 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 Resistors of 10 Ω, 470 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 A 1.4 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  18. 18.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 Resistors of 100 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 Resistors of 10 Ω, 47 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 A 2.2 V battery is joined to 12 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  22. 22.🧮 Resistors of 100 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 Resistors of 22 Ω, 20 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 Resistors of 47 Ω, 10 Ω, 50 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 A 33 Ω resistor is joined in series with two equal 20 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 20 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  29. 29.🧮 Resistors of 22 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 An 8 V battery is joined to 12 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 Resistors of 10 Ω, 22 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 A 330 Ω resistor is joined in series with two equal 330 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  33. 33.🧮 Resistors of 150 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 Resistors of 20 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 Resistors of 47 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 Resistors of 50 Ω, 220 Ω, 33 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 A 150 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)?
  39. 39.🧮 A 50 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.🧮 Resistors of 100 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 500
  2. 0.25
  3. 235
  4. 402
  5. 50
  6. less than either one
  7. bigger
  8. 0.1
  9. 20
  10. 440
  11. 303
  12. 25
  13. 100
  14. 5
  15. 840
  16. 513
  17. 0.1
  18. 5
  19. 168
  20. 67
  21. 0.1
  22. 133
  23. 50
  24. 52
  25. 140
  26. 43
  27. 70
  28. 50
  29. 242
  30. 0.5
  31. 502
  32. 495
  33. 620
  34. 42
  35. 57
  36. 110
  37. 325
  38. 170
  39. 70
  40. 430

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