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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 132 · 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.🧮 Resistors of 50 Ω, 220 Ω, 470 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 A 2.8 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  3. 3.🧮 Two resistors in parallel give a total that is … (a) more than either one (b) their sum (c) always zero (d) less than either one
  4. 4.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 A 47 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)?
  6. 6.🧮 Five equal 125 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 A 1.7 V battery is joined to 12 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Resistors of 220 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Adding another resistor in series makes the total resistance … (a) smaller (b) stay the same (c) bigger (d) zero
  11. 11.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 A 10 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)?
  13. 13.🧮 A 33 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)?
  14. 14.🧮 An 8 V battery is joined to 4 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 A 1.7 V battery is joined to 5 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  18. 18.🧮 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)?
  19. 19.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Resistors of 20 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 22 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 A 10 Ω resistor is joined in series with two equal 50 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  25. 25.🧮 A 5 V battery is joined to 2 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 A 33 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)?
  28. 28.🧮 Resistors of 220 Ω, 50 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 Two equal 50 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 50 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)?
  32. 32.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 Resistors of 68 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 A 1.1 V battery is joined to 3 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  35. 35.🧮 A 1 V battery is joined to 5 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 A 12 V battery is joined to 10 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 A 10 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)?
  38. 38.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 A 0.6 V battery is joined to 3 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 Resistors of 20 Ω, 220 Ω, 470 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 960
  2. 0.2
  3. less than either one
  4. 100
  5. 282
  6. 25
  7. 0.1
  8. 25
  9. 242
  10. bigger
  11. 10
  12. 110
  13. 268
  14. 0.5
  15. 50
  16. 100
  17. 0.1
  18. 600
  19. 5
  20. 10
  21. 490
  22. 32
  23. 500
  24. 35
  25. 1
  26. 20
  27. 533
  28. 370
  29. 25
  30. 5
  31. 55
  32. 100
  33. 538
  34. 0.1
  35. 0.1
  36. 1
  37. 510
  38. 25
  39. 0.1
  40. 810

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