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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 246 · 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 6 V battery is joined to 3 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  2. 2.🧮 A 330 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)?
  3. 3.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 A 2.5 V battery is joined to 8 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 A 33 Ω resistor is joined in series with two equal 40 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  6. 6.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) bigger (c) smaller (d) zero
  7. 7.🧮 A 3.75 V battery is joined to 3 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 Resistors of 470 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  9. 9.🧮 Two resistors in parallel give a total that is … (a) less than either one (b) their sum (c) more than either one (d) always zero
  10. 10.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 A 33 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)?
  14. 14.🧮 Resistors of 470 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 A 33 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)?
  17. 17.🧮 Resistors of 20 Ω, 10 Ω, 33 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 A 5 V battery is joined to 6 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 A 150 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)?
  20. 20.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 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)?
  24. 24.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 A 22 V battery is joined to 10 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 A 47 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)?
  27. 27.🧮 Resistors of 50 Ω, 20 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  29. 29.🧮 Resistors of 470 Ω, 68 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 A 1.6 V battery is joined to 8 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 Resistors of 100 Ω, 100 Ω, 33 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 A 12 V battery is joined to 2 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 A 1.5 V battery is joined to 10 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 A 68 Ω resistor is joined in series with two equal 40 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  38. 38.🧮 A 47 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)?
  39. 39.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. 1
  2. 565
  3. 165
  4. 0.25
  5. 53
  6. bigger
  7. 0.25
  8. 800
  9. less than either one
  10. 10
  11. 50
  12. 5
  13. 43
  14. 520
  15. 25
  16. 83
  17. 96
  18. 0.5
  19. 160
  20. 50
  21. 110
  22. 10
  23. 55
  24. 50
  25. 1
  26. 157
  27. 400
  28. 50
  29. 560
  30. 0.1
  31. 20
  32. 283
  33. 1
  34. 20
  35. 0.1
  36. 20
  37. 88
  38. 57
  39. 5
  40. 235

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