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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 219 · 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 150 Ω resistor is joined in series with two equal 220 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  2. 2.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Resistors of 10 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  5. 5.🧮 Two resistors in parallel give a total that is … (a) less than either one (b) more than either one (c) their sum (d) always zero
  6. 6.🧮 Adding another resistor in series makes the total resistance … (a) smaller (b) zero (c) bigger (d) stay the same
  7. 7.🧮 A 4.25 V battery is joined to 5 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Resistors of 470 Ω, 10 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Resistors of 10 Ω, 68 Ω, 220 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  11. 11.🧮 A 150 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)?
  12. 12.🧮 Resistors of 33 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Resistors of 20 Ω, 330 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 A 7 V battery is joined to 2 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  17. 17.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 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)?
  19. 19.🧮 A 1.2 V battery is joined to 2 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  20. 20.🧮 A 2.2 V battery is joined to 3 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 Resistors of 220 Ω, 100 Ω, 330 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 A 3.25 V battery is joined to 8 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  23. 23.🧮 A 1.6 V battery is joined to 4 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 Resistors of 470 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 A 6 V battery is joined to 10 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  28. 28.🧮 Resistors of 150 Ω, 10 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 A 22 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)?
  31. 31.🧮 Resistors of 33 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 Resistors of 330 Ω, 47 Ω, 100 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 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)?
  34. 34.🧮 A 2.25 V battery is joined to 6 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  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.🧮 A 47 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)?
  37. 37.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 A 1.75 V battery is joined to 4 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 Resistors of 50 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 260
  2. 165
  3. 20
  4. 60
  5. less than either one
  6. bigger
  7. 0.25
  8. 235
  9. 530
  10. 628
  11. 155
  12. 253
  13. 100
  14. 50
  15. 400
  16. 1
  17. 110
  18. 147
  19. 0.1
  20. 0.2
  21. 870
  22. 0.25
  23. 0.1
  24. 5
  25. 492
  26. 10
  27. 0.5
  28. 490
  29. 25
  30. 27
  31. 183
  32. 487
  33. 495
  34. 0.25
  35. 0.5
  36. 212
  37. 50
  38. 50
  39. 0.25
  40. 150

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