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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 692 · 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) more than either one (b) always zero (c) less than either one (d) their sum
  2. 2.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) smaller (c) zero (d) bigger
  3. 3.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 A 2 V battery is joined to 4 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 Resistors of 68 Ω, 10 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 A 9 V battery is joined to 3 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  7. 7.🧮 Resistors of 220 Ω, 47 Ω, 47 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Resistors of 150 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Resistors of 33 Ω, 22 Ω, 47 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 An 8 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  13. 13.🧮 Resistors of 22 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 A 10 V battery is joined to 4 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 A 6.5 V battery is joined to 10 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 50 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 A 2.4 V battery is joined to 12 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 A 68 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)?
  25. 25.🧮 Resistors of 150 Ω, 47 Ω, 330 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 A 13 V battery is joined to 10 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  27. 27.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 An 11 V battery is joined to 8 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  29. 29.🧮 Resistors of 470 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 A 15 V battery is joined to 5 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 Resistors of 10 Ω, 100 Ω, 20 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 Resistors of 47 Ω, 20 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 A 0.8 V battery is joined to 3 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 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)?
  37. 37.🧮 Resistors of 20 Ω, 50 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 Resistors of 33 Ω, 220 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Resistors of 22 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. less than either one
  2. bigger
  3. 100
  4. 0.2
  5. 125
  6. 1
  7. 464
  8. 165
  9. 480
  10. 20
  11. 122
  12. 1
  13. 44
  14. 1
  15. 0.5
  16. 110
  17. 150
  18. 0.1
  19. 25
  20. 5
  21. 100
  22. 25
  23. 20
  24. 88
  25. 574
  26. 1
  27. 50
  28. 1
  29. 620
  30. 1
  31. 5
  32. 50
  33. 198
  34. 537
  35. 0.1
  36. 42
  37. 220
  38. 321
  39. 100
  40. 32

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