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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 156 · 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) their sum (c) less than either one (d) always zero
  2. 2.🧮 Resistors of 22 Ω, 33 Ω, 47 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  3. 3.🧮 Adding another resistor in series makes the total resistance … (a) zero (b) stay the same (c) smaller (d) bigger
  4. 4.🧮 A 68 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)?
  5. 5.🧮 A 6 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  6. 6.🧮 Resistors of 150 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  7. 7.🧮 Resistors of 22 Ω, 220 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Resistors of 10 Ω, 50 Ω, 330 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 A 1.2 V battery is joined to 4 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  12. 12.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Resistors of 10 Ω, 470 Ω, 100 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 220 Ω, 22 Ω, 22 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 A 4 V battery is joined to 6 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 33 Ω, 47 Ω, 330 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 A 220 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)?
  24. 24.🧮 An 8 V battery is joined to 6 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  25. 25.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 Resistors of 10 Ω, 470 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 50 Ω, 50 Ω, 20 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Resistors of 50 Ω, 470 Ω, 22 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 A 22 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)?
  30. 30.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  31. 31.🧮 A 3.4 V battery is joined to 12 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  32. 32.🧮 A 50 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)?
  33. 33.🧮 Resistors of 100 Ω, 68 Ω, 470 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 Resistors of 470 Ω, 10 Ω, 33 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 A 3.5 V battery is joined to 3 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 A 68 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)?
  37. 37.🧮 A 0.8 V battery is joined to 6 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  38. 38.🧮 Resistors of 10 Ω, 100 Ω, 150 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 A 2.4 V battery is joined to 12 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 A 4.4 V battery is joined to 12 Ω and 10 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. less than either one
  2. 170
  3. bigger
  4. 303
  5. 1
  6. 620
  7. 275
  8. 110
  9. 610
  10. 50
  11. 0.1
  12. 20
  13. 50
  14. 100
  15. 5
  16. 627
  17. 594
  18. 0.5
  19. 10
  20. 25
  21. 5
  22. 740
  23. 230
  24. 1
  25. 235
  26. 630
  27. 142
  28. 610
  29. 72
  30. 50
  31. 0.2
  32. 550
  33. 688
  34. 613
  35. 0.5
  36. 73
  37. 0.1
  38. 480
  39. 0.1
  40. 0.2

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