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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 113 · 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.🧮 A 14 V battery is joined to 6 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  2. 2.🧮 Resistors of 68 Ω, 470 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) their sum (d) more than either one
  4. 4.🧮 Four equal 400 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) zero (b) bigger (c) stay the same (d) smaller
  6. 6.🧮 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)?
  7. 7.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 A 47 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)?
  11. 11.🧮 Resistors of 10 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 A 10 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)?
  13. 13.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Three equal 60 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 40 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  16. 16.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 A 1.7 V battery is joined to 12 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  18. 18.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 A 1.4 V battery is joined to 2 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  20. 20.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 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)?
  22. 22.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 Resistors of 20 Ω, 220 Ω, 330 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 A 3.2 V battery is joined to 8 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 Resistors of 100 Ω, 20 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 A 1.8 V battery is joined to 3 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 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)?
  32. 32.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 A 1.6 V battery is joined to 3 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 A 1.3 V battery is joined to 5 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 A 3.5 V battery is joined to 12 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 A 50 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)?
  38. 38.🧮 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)?
  39. 39.🧮 Resistors of 20 Ω, 20 Ω, 150 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  40. 40.🧮 A 1.8 V battery is joined to 8 Ω and 10 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. 1
  2. 1008
  3. less than either one
  4. 100
  5. bigger
  6. 495
  7. 50
  8. 10
  9. 5
  10. 147
  11. 32
  12. 30
  13. 10
  14. 20
  15. 42
  16. 500
  17. 0.1
  18. 165
  19. 0.1
  20. 20
  21. 97
  22. 25
  23. 617
  24. 25
  25. 0.2
  26. 100
  27. 10
  28. 450
  29. 235
  30. 0.2
  31. 133
  32. 5
  33. 0.2
  34. 20
  35. 0.1
  36. 0.25
  37. 285
  38. 270
  39. 290
  40. 0.1

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