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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 136 · 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 220 Ω, 22 Ω, 330 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 Four equal 20 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.🧮 Resistors of 10 Ω, 22 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  5. 5.🧮 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
  6. 6.🧮 Resistors of 68 Ω, 22 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  7. 7.🧮 A 3 V battery is joined to 2 Ω and 10 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) bigger (d) smaller
  9. 9.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Resistors of 33 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 Resistors of 100 Ω, 330 Ω, 100 Ω and 47 Ω are joined in series. 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.🧮 A 10 V battery is joined to 4 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Resistors of 20 Ω, 330 Ω, 50 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 A 33 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)?
  18. 18.🧮 Resistors of 22 Ω, 220 Ω, 33 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  19. 19.🧮 A 3 V battery is joined to 10 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  20. 20.🧮 Resistors of 22 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 Resistors of 20 Ω, 20 Ω, 47 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 A 150 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)?
  24. 24.🧮 A 100 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)?
  25. 25.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 A 4 V battery is joined to 4 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  28. 28.🧮 Resistors of 33 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 A 2 V battery is joined to 3 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  30. 30.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  31. 31.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 Resistors of 33 Ω, 50 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 A 47 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)?
  34. 34.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 Resistors of 100 Ω, 22 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 Resistors of 22 Ω, 10 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 Resistors of 33 Ω, 68 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 Resistors of 150 Ω, 10 Ω, 10 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Resistors of 50 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 722
  2. 5
  3. 10
  4. 362
  5. less than either one
  6. 100
  7. 0.25
  8. bigger
  9. 5
  10. 20
  11. 83
  12. 577
  13. 100
  14. 1
  15. 50
  16. 500
  17. 53
  18. 285
  19. 0.2
  20. 122
  21. 417
  22. 10
  23. 250
  24. 150
  25. 25
  26. 50
  27. 0.5
  28. 133
  29. 0.25
  30. 235
  31. 100
  32. 130
  33. 97
  34. 20
  35. 155
  36. 100
  37. 169
  38. 192
  39. 20
  40. 270

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