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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 741 · 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.

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  1. 1.🧮 A 6 V battery is joined to 6 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  2. 2.🧮 Two resistors in parallel give a total that is … (a) their sum (b) always zero (c) more than either one (d) less than either one
  3. 3.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) smaller (c) bigger (d) zero
  5. 5.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 A 1.5 V battery is joined to 2 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 A 1.75 V battery is joined to 2 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  9. 9.🧮 A 1.2 V battery is joined to 2 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  10. 10.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Resistors of 10 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 A 4.4 V battery is joined to 10 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 A 150 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)?
  16. 16.🧮 Resistors of 100 Ω, 100 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Resistors of 220 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 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)?
  24. 24.🧮 A 4.25 V battery is joined to 5 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  25. 25.🧮 Resistors of 68 Ω, 330 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 A 2.2 V battery is joined to 12 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  27. 27.🧮 An 8 V battery is joined to 4 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  28. 28.🧮 Resistors of 10 Ω, 68 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  31. 31.🧮 A 100 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)?
  32. 32.🧮 Resistors of 50 Ω, 20 Ω, 50 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 A 1 V battery is joined to 2 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 Resistors of 10 Ω, 220 Ω, 33 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 A 3.25 V battery is joined to 8 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 Resistors of 47 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 Resistors of 150 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 A 3.4 V battery is joined to 5 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 Resistors of 330 Ω, 330 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  40. 40.🧮 A 50 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)?

Answer key

  1. 0.5
  2. less than either one
  3. 50
  4. bigger
  5. 100
  6. 10
  7. 0.25
  8. 0.25
  9. 0.2
  10. 20
  11. 5
  12. 500
  13. 57
  14. 0.2
  15. 650
  16. 530
  17. 50
  18. 25
  19. 5
  20. 100
  21. 267
  22. 25
  23. 147
  24. 0.25
  25. 466
  26. 0.1
  27. 0.5
  28. 298
  29. 50
  30. 5
  31. 600
  32. 142
  33. 0.1
  34. 285
  35. 0.25
  36. 80
  37. 170
  38. 0.2
  39. 810
  40. 150

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