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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 142 · 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 10 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 Resistors of 22 Ω, 22 Ω, 68 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  3. 3.🧮 Two resistors in parallel give a total that is … (a) always zero (b) less than either one (c) more than either one (d) their sum
  4. 4.🧮 Two equal 1000 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) zero (c) bigger (d) stay the same
  6. 6.🧮 A 1 V battery is joined to 2 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  7. 7.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 A 330 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)?
  11. 11.🧮 A 10 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)?
  12. 12.🧮 A 0.8 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  13. 13.🧮 A 2.75 V battery is joined to 3 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  14. 14.🧮 Resistors of 68 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 A 220 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)?
  16. 16.🧮 A 3 V battery is joined to 4 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  17. 17.🧮 A 1.5 V battery is joined to 12 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  18. 18.🧮 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)?
  19. 19.🧮 Resistors of 470 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 A 1.5 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 Resistors of 33 Ω, 47 Ω, 50 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 220 Ω, 50 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 A 4.4 V battery is joined to 12 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 A 7 V battery is joined to 2 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  25. 25.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 33 Ω, 33 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  29. 29.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 A 2.6 V battery is joined to 8 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 A 22 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)?
  32. 32.🧮 A 2.4 V battery is joined to 8 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 Resistors of 20 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 A 220 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)?
  36. 36.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 A 6.5 V battery is joined to 3 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  38. 38.🧮 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)?
  39. 39.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 A 4.25 V battery is joined to 12 Ω and 5 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. 60
  2. 582
  3. less than either one
  4. 500
  5. bigger
  6. 0.1
  7. 50
  8. 100
  9. 100
  10. 495
  11. 35
  12. 0.1
  13. 0.25
  14. 398
  15. 225
  16. 0.25
  17. 0.1
  18. 53
  19. 480
  20. 0.25
  21. 198
  22. 320
  23. 0.2
  24. 0.5
  25. 10
  26. 165
  27. 286
  28. 100
  29. 100
  30. 0.2
  31. 47
  32. 0.2
  33. 235
  34. 42
  35. 270
  36. 20
  37. 0.5
  38. 78
  39. 5
  40. 0.25

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