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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 564 · 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.🧮 Two resistors in parallel give a total that is … (a) less than either one (b) more than either one (c) always zero (d) their sum
  2. 2.🧮 A 47 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)?
  3. 3.🧮 Resistors of 20 Ω, 33 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  4. 4.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 Adding another resistor in series makes the total resistance … (a) smaller (b) stay the same (c) zero (d) bigger
  6. 6.🧮 A 1.1 V battery is joined to 5 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  7. 7.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 Five equal 125 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 A 1.4 V battery is joined to 2 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  10. 10.🧮 A 1.3 V battery is joined to 3 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 Resistors of 68 Ω, 220 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Resistors of 150 Ω, 22 Ω, 150 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 A 22 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)?
  16. 16.🧮 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)?
  17. 17.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 Resistors of 22 Ω, 47 Ω, 50 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  19. 19.🧮 Resistors of 47 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 A 2.8 V battery is joined to 10 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 A 33 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)?
  22. 22.🧮 A 20 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)?
  23. 23.🧮 A 5.5 V battery is joined to 12 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 Resistors of 47 Ω, 20 Ω, 10 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 22 Ω, 47 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Resistors of 33 Ω, 20 Ω, 150 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 Resistors of 33 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 Resistors of 47 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 A 50 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)?
  32. 32.🧮 A 150 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)?
  33. 33.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 A 150 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)?
  35. 35.🧮 A 6 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 Resistors of 22 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 Resistors of 20 Ω, 220 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 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)?
  40. 40.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. less than either one
  2. 52
  3. 153
  4. 20
  5. bigger
  6. 0.1
  7. 5
  8. 25
  9. 0.2
  10. 0.1
  11. 338
  12. 20
  13. 332
  14. 500
  15. 187
  16. 53
  17. 100
  18. 187
  19. 115
  20. 0.2
  21. 58
  22. 45
  23. 0.25
  24. 10
  25. 547
  26. 10
  27. 539
  28. 533
  29. 66
  30. 97
  31. 215
  32. 170
  33. 110
  34. 175
  35. 1
  36. 72
  37. 570
  38. 100
  39. 133
  40. 235

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