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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 462 · 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.🧮 A 1.4 V battery is joined to 4 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  2. 2.🧮 A 470 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)?
  3. 3.🧮 A 1.1 V battery is joined to 8 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 Two resistors in parallel give a total that is … (a) always zero (b) less than either one (c) their sum (d) more than either one
  5. 5.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) zero (c) smaller (d) bigger
  6. 6.🧮 A 1.6 V battery is joined to 10 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  7. 7.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 Resistors of 68 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  9. 9.🧮 Resistors of 22 Ω, 330 Ω, 470 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Resistors of 10 Ω, 10 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  11. 11.🧮 A 4 V battery is joined to 2 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  12. 12.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Resistors of 330 Ω, 100 Ω, 150 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 Resistors of 470 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 220 Ω, 22 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 Resistors of 47 Ω, 330 Ω, 100 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Resistors of 150 Ω, 20 Ω, 47 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 50 Ω, 47 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 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)?
  24. 24.🧮 Five equal 125 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 A 220 Ω resistor is joined in series with two equal 1000 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  26. 26.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 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)?
  28. 28.🧮 A 150 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)?
  29. 29.🧮 Resistors of 150 Ω, 100 Ω, 33 Ω and 47 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.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 A 2.2 V battery is joined to 3 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 A 470 Ω resistor is joined in series with two equal 10 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  35. 35.🧮 A 68 Ω resistor is joined in series with two equal 10 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  36. 36.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 Resistors of 220 Ω, 20 Ω, 50 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Resistors of 330 Ω, 20 Ω, 220 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 0.1
  2. 480
  3. 0.1
  4. less than either one
  5. bigger
  6. 0.1
  7. 20
  8. 288
  9. 1042
  10. 490
  11. 0.5
  12. 500
  13. 100
  14. 648
  15. 480
  16. 5
  17. 264
  18. 165
  19. 487
  20. 110
  21. 239
  22. 147
  23. 495
  24. 25
  25. 720
  26. 50
  27. 43
  28. 315
  29. 330
  30. 20
  31. 100
  32. 0.2
  33. 20
  34. 475
  35. 73
  36. 5
  37. 510
  38. 5
  39. 100
  40. 1040

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