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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 54 · 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 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)?
  2. 2.🧮 A 12 V battery is joined to 6 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  3. 3.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Resistors of 220 Ω, 33 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  5. 5.🧮 Resistors of 220 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 A 22 V battery is joined to 12 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  7. 7.🧮 A 50 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)?
  8. 8.🧮 Two resistors in parallel give a total that is … (a) more than either one (b) their sum (c) less than either one (d) always zero
  9. 9.🧮 Resistors of 50 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Resistors of 330 Ω, 470 Ω, 50 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 A 1.1 V battery is joined to 5 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  14. 14.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Resistors of 10 Ω, 33 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) bigger (c) zero (d) smaller
  19. 19.🧮 A 150 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)?
  20. 20.🧮 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)?
  21. 21.🧮 A 1.4 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  22. 22.🧮 Resistors of 220 Ω, 33 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 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)?
  24. 24.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 Resistors of 47 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 An 8 V battery is joined to 12 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  27. 27.🧮 A 2.4 V battery is joined to 8 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  28. 28.🧮 A 470 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)?
  29. 29.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 Resistors of 100 Ω, 68 Ω, 33 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Resistors of 10 Ω, 20 Ω, 10 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 A 2 V battery is joined to 12 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 Resistors of 33 Ω, 22 Ω, 50 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 A 0.8 V battery is joined to 2 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  35. 35.🧮 A 20 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)?
  36. 36.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 Resistors of 150 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 Resistors of 47 Ω, 20 Ω, 50 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  40. 40.🧮 Resistors of 68 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 495
  2. 1
  3. 20
  4. 403
  5. 550
  6. 1
  7. 215
  8. less than either one
  9. 72
  10. 25
  11. 1000
  12. 20
  13. 0.1
  14. 5
  15. 5
  16. 373
  17. 10
  18. bigger
  19. 170
  20. 88
  21. 0.1
  22. 321
  23. 155
  24. 100
  25. 80
  26. 0.5
  27. 0.2
  28. 580
  29. 500
  30. 671
  31. 510
  32. 0.1
  33. 205
  34. 0.1
  35. 185
  36. 25
  37. 165
  38. 160
  39. 185
  40. 78

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