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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 280 · 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 100 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 Resistors of 47 Ω, 33 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  4. 4.🧮 A 2.2 V battery is joined to 6 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 Two resistors in parallel give a total that is … (a) always zero (b) more than either one (c) their sum (d) less than either one
  6. 6.🧮 A 10 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)?
  7. 7.🧮 A 5.5 V battery is joined to 3 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) zero (c) bigger (d) smaller
  10. 10.🧮 A 220 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)?
  11. 11.🧮 Resistors of 470 Ω, 33 Ω, 68 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 Resistors of 470 Ω, 22 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Resistors of 20 Ω, 150 Ω, 330 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 Resistors of 10 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  19. 19.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 Resistors of 330 Ω, 20 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 150 Ω, 22 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Resistors of 470 Ω, 220 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 A 6.5 V battery is joined to 8 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  25. 25.🧮 Five equal 125 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 A 68 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)?
  27. 27.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 A 14 V battery is joined to 2 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  29. 29.🧮 A 6 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  30. 30.🧮 Resistors of 47 Ω, 330 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 A 33 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)?
  32. 32.🧮 A 68 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)?
  33. 33.🧮 A 50 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)?
  34. 34.🧮 Resistors of 220 Ω, 68 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 Resistors of 10 Ω, 10 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 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)?
  38. 38.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Resistors of 220 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 147
  2. 500
  3. 300
  4. 0.2
  5. less than either one
  6. 245
  7. 0.5
  8. 5
  9. bigger
  10. 240
  11. 581
  12. 502
  13. 165
  14. 10
  15. 10
  16. 510
  17. 10
  18. 60
  19. 25
  20. 570
  21. 5
  22. 502
  23. 710
  24. 0.5
  25. 25
  26. 93
  27. 5
  28. 1
  29. 1
  30. 387
  31. 143
  32. 568
  33. 60
  34. 310
  35. 100
  36. 70
  37. 70
  38. 50
  39. 100
  40. 320

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