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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 388 · 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.🧮 Resistors of 20 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 Resistors of 20 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  3. 3.🧮 A 3 V battery is joined to 12 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 Adding another resistor in series makes the total resistance … (a) zero (b) stay the same (c) bigger (d) smaller
  5. 5.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 Resistors of 20 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  9. 9.🧮 Resistors of 330 Ω, 100 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Resistors of 50 Ω, 50 Ω, 47 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  11. 11.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 Two resistors in parallel give a total that is … (a) their sum (b) less than either one (c) more than either one (d) always zero
  13. 13.🧮 Resistors of 47 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 A 0.8 V battery is joined to 2 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Resistors of 470 Ω, 68 Ω, 220 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 47 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 Resistors of 20 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  19. 19.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 An 18 V battery is joined to 10 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 An 8 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  23. 23.🧮 A 3.5 V battery is joined to 10 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 Resistors of 330 Ω, 22 Ω, 220 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 Resistors of 10 Ω, 20 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 A 3.2 V battery is joined to 8 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  28. 28.🧮 Resistors of 47 Ω, 20 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 Resistors of 68 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 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)?
  31. 31.🧮 A 14 V battery is joined to 10 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  32. 32.🧮 Resistors of 470 Ω, 150 Ω, 330 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 A 4.5 V battery is joined to 10 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 Resistors of 50 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 Resistors of 22 Ω, 20 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 A 1.5 V battery is joined to 12 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 A 10 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)?
  40. 40.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. 53
  2. 88
  3. 0.2
  4. bigger
  5. 5
  6. 25
  7. 500
  8. 170
  9. 650
  10. 477
  11. 20
  12. less than either one
  13. 80
  14. 0.1
  15. 50
  16. 826
  17. 115
  18. 30
  19. 100
  20. 1
  21. 165
  22. 1
  23. 0.25
  24. 5
  25. 619
  26. 500
  27. 0.2
  28. 89
  29. 88
  30. 335
  31. 1
  32. 1280
  33. 0.25
  34. 520
  35. 110
  36. 372
  37. 10
  38. 0.1
  39. 175
  40. 100

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