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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 888 · 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.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  2. 2.🧮 A 1 V battery is joined to 5 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  3. 3.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 Resistors of 47 Ω, 47 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 A 2.8 V battery is joined to 10 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 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
  9. 9.🧮 An 11 V battery is joined to 10 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  10. 10.🧮 A 6 V battery is joined to 4 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 Resistors of 470 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 A 0.5 V battery is joined to 2 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  13. 13.🧮 Resistors of 22 Ω, 20 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 Adding another resistor in series makes the total resistance … (a) smaller (b) zero (c) stay the same (d) bigger
  15. 15.🧮 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)?
  16. 16.🧮 A 50 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)?
  17. 17.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 Resistors of 10 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  19. 19.🧮 A 330 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)?
  20. 20.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 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)?
  22. 22.🧮 Resistors of 22 Ω, 20 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 A 20 Ω resistor is joined in series with two equal 1000 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  24. 24.🧮 Resistors of 20 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 A 330 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)?
  26. 26.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 330 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 A 7.5 V battery is joined to 3 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  29. 29.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  31. 31.🧮 Resistors of 470 Ω, 330 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 A 150 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.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 A 3.5 V battery is joined to 2 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 A 1.8 V battery is joined to 4 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  38. 38.🧮 A 2.5 V battery is joined to 8 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Resistors of 68 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 10
  2. 0.1
  3. 165
  4. 25
  5. 244
  6. 100
  7. 0.2
  8. less than either one
  9. 0.5
  10. 0.5
  11. 570
  12. 0.1
  13. 52
  14. bigger
  15. 52
  16. 60
  17. 20
  18. 32
  19. 565
  20. 5
  21. 38
  22. 192
  23. 520
  24. 350
  25. 335
  26. 5
  27. 340
  28. 0.5
  29. 50
  30. 100
  31. 950
  32. 20
  33. 160
  34. 20
  35. 0.5
  36. 110
  37. 0.2
  38. 0.25
  39. 100
  40. 398

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