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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 704 · 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.🧮 Resistors of 47 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 A 3 V battery is joined to 10 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 A 4.25 V battery is joined to 5 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 Resistors of 330 Ω, 50 Ω, 20 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 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
  7. 7.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) smaller (c) zero (d) bigger
  9. 9.🧮 A 1.8 V battery is joined to 6 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  10. 10.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Resistors of 470 Ω, 50 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 A 6 V battery is joined to 12 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  13. 13.🧮 A 20 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)?
  14. 14.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Resistors of 10 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 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)?
  17. 17.🧮 Resistors of 33 Ω, 47 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 A 1.3 V battery is joined to 3 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 A 22 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)?
  20. 20.🧮 Resistors of 33 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 A 22 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)?
  22. 22.🧮 A 330 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)?
  23. 23.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 Resistors of 470 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 Resistors of 33 Ω, 47 Ω, 50 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 150 Ω, 470 Ω, 10 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 A 470 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)?
  29. 29.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 A 4.5 V battery is joined to 5 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 A 0.5 V battery is joined to 2 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  32. 32.🧮 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)?
  33. 33.🧮 Resistors of 50 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 Resistors of 22 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 A 470 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)?
  36. 36.🧮 Resistors of 22 Ω, 150 Ω, 10 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 A 7 V battery is joined to 3 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. 97
  2. 100
  3. 0.2
  4. 0.25
  5. 500
  6. less than either one
  7. 25
  8. bigger
  9. 0.1
  10. 100
  11. 990
  12. 0.25
  13. 130
  14. 20
  15. 78
  16. 187
  17. 550
  18. 0.1
  19. 122
  20. 66
  21. 42
  22. 350
  23. 20
  24. 517
  25. 20
  26. 163
  27. 640
  28. 970
  29. 25
  30. 0.5
  31. 0.1
  32. 147
  33. 60
  34. 32
  35. 520
  36. 282
  37. 5
  38. 1
  39. 235
  40. 110

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