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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 367 · 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) their sum (b) always zero (c) less than either one (d) more than either one
  2. 2.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 Adding another resistor in series makes the total resistance … (a) zero (b) bigger (c) smaller (d) stay the same
  6. 6.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 Resistors of 20 Ω, 220 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Resistors of 50 Ω, 50 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 A 1.4 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 Resistors of 10 Ω, 22 Ω, 330 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 A 100 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)?
  15. 15.🧮 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)?
  16. 16.🧮 A 6.5 V battery is joined to 5 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  17. 17.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 A 0.6 V battery is joined to 3 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 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)?
  21. 21.🧮 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)?
  22. 22.🧮 A 14 V battery is joined to 4 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  23. 23.🧮 Resistors of 50 Ω, 20 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 Resistors of 470 Ω, 50 Ω, 10 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 A 330 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)?
  29. 29.🧮 Resistors of 10 Ω, 10 Ω, 330 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  31. 31.🧮 Resistors of 220 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 Resistors of 10 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 A 22 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.🧮 Resistors of 100 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 A 2.25 V battery is joined to 3 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 A 68 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)?
  38. 38.🧮 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)?
  39. 39.🧮 Resistors of 50 Ω, 470 Ω, 220 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  40. 40.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. less than either one
  2. 110
  3. 100
  4. 20
  5. bigger
  6. 500
  7. 460
  8. 50
  9. 150
  10. 0.1
  11. 235
  12. 512
  13. 10
  14. 200
  15. 110
  16. 0.5
  17. 20
  18. 0.1
  19. 10
  20. 335
  21. 520
  22. 1
  23. 170
  24. 680
  25. 20
  26. 5
  27. 50
  28. 355
  29. 397
  30. 165
  31. 320
  32. 60
  33. 187
  34. 147
  35. 5
  36. 0.25
  37. 178
  38. 150
  39. 762
  40. 10

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