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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 646 · 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.

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  1. 1.🧮 Resistors of 330 Ω, 470 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 A 2.2 V battery is joined to 12 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 A 6 V battery is joined to 8 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  6. 6.🧮 Adding another resistor in series makes the total resistance … (a) smaller (b) stay the same (c) zero (d) bigger
  7. 7.🧮 A 1.4 V battery is joined to 2 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 Two resistors in parallel give a total that is … (a) their sum (b) always zero (c) more than either one (d) less than either one
  9. 9.🧮 Resistors of 68 Ω, 150 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 A 68 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)?
  12. 12.🧮 Resistors of 10 Ω, 220 Ω, 100 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 Resistors of 470 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 Resistors of 470 Ω, 330 Ω, 22 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 A 4.4 V battery is joined to 10 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  20. 20.🧮 A 100 Ω resistor is joined in series with two equal 200 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  21. 21.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 A 7 V battery is joined to 2 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 A 2.8 V battery is joined to 12 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 Resistors of 20 Ω, 20 Ω, 22 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 A 470 Ω resistor is joined in series with two equal 100 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  28. 28.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  29. 29.🧮 A 16 V battery is joined to 12 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  30. 30.🧮 Resistors of 100 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Resistors of 68 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 A 33 Ω resistor is joined in series with two equal 200 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  33. 33.🧮 Resistors of 470 Ω, 150 Ω, 20 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 Resistors of 150 Ω, 470 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 A 0.8 V battery is joined to 4 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 Resistors of 20 Ω, 22 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 Resistors of 470 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 Resistors of 68 Ω, 33 Ω, 150 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 A 22 Ω resistor is joined in series with two equal 50 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  40. 40.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. 868
  2. 5
  3. 10
  4. 0.1
  5. 0.5
  6. bigger
  7. 0.1
  8. less than either one
  9. 368
  10. 5
  11. 233
  12. 660
  13. 620
  14. 832
  15. 25
  16. 100
  17. 20
  18. 235
  19. 0.2
  20. 200
  21. 110
  22. 5
  23. 1
  24. 100
  25. 0.2
  26. 130
  27. 520
  28. 20
  29. 1
  30. 150
  31. 168
  32. 133
  33. 708
  34. 1090
  35. 0.1
  36. 512
  37. 517
  38. 298
  39. 47
  40. 100

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