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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 230 · 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.🧮 Adding another resistor in series makes the total resistance … (a) smaller (b) stay the same (c) zero (d) bigger
  2. 2.🧮 Resistors of 100 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  3. 3.🧮 Resistors of 33 Ω, 47 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  4. 4.🧮 Resistors of 50 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  5. 5.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 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
  7. 7.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 A 22 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)?
  9. 9.🧮 Resistors of 22 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Resistors of 50 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Resistors of 50 Ω, 220 Ω, 33 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 An 8 V battery is joined to 2 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 Resistors of 22 Ω, 20 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 Resistors of 47 Ω and 470 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.🧮 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)?
  19. 19.🧮 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)?
  20. 20.🧮 Resistors of 20 Ω, 470 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 68 Ω, 150 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Resistors of 470 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 A 100 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)?
  26. 26.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 A 33 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)?
  29. 29.🧮 A 1.5 V battery is joined to 5 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  30. 30.🧮 A 1.5 V battery is joined to 12 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 Resistors of 50 Ω, 68 Ω, 20 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 A 68 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.🧮 A 22 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)?
  35. 35.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 Resistors of 47 Ω, 100 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 A 1.4 V battery is joined to 10 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  38. 38.🧮 An 8.5 V battery is joined to 5 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. bigger
  2. 430
  3. 102
  4. 70
  5. 5
  6. less than either one
  7. 110
  8. 122
  9. 242
  10. 100
  11. 270
  12. 5
  13. 325
  14. 1
  15. 262
  16. 517
  17. 53
  18. 170
  19. 97
  20. 710
  21. 20
  22. 438
  23. 690
  24. 20
  25. 120
  26. 50
  27. 10
  28. 38
  29. 0.1
  30. 0.1
  31. 235
  32. 288
  33. 78
  34. 32
  35. 165
  36. 180
  37. 0.1
  38. 0.5
  39. 25
  40. 50

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