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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 463 · 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.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  2. 2.🧮 Adding another resistor in series makes the total resistance … (a) bigger (b) stay the same (c) zero (d) smaller
  3. 3.🧮 Resistors of 220 Ω, 33 Ω, 150 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  4. 4.🧮 A 470 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)?
  5. 5.🧮 A 6.5 V battery is joined to 10 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  6. 6.🧮 A 330 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)?
  7. 7.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 Resistors of 100 Ω, 220 Ω, 33 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  9. 9.🧮 Resistors of 33 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Two resistors in parallel give a total that is … (a) always zero (b) less than either one (c) their sum (d) more than either one
  11. 11.🧮 Resistors of 470 Ω, 20 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 A 15 V battery is joined to 5 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  13. 13.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 470 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 A 1.1 V battery is joined to 5 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 A 17 V battery is joined to 5 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  20. 20.🧮 Resistors of 10 Ω, 33 Ω, 10 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 Resistors of 10 Ω, 20 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 100 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Resistors of 22 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 A 50 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)?
  30. 30.🧮 A 2 V battery is joined to 5 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 A 1.5 V battery is joined to 3 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  32. 32.🧮 A 0.5 V battery is joined to 3 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 Resistors of 50 Ω, 22 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 Four equal 80 Ω resistors are joined in parallel. 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 47 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)?
  37. 37.🧮 A 20 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)?
  38. 38.🧮 A 1.2 V battery is joined to 8 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 A 1.2 V battery is joined to 2 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 A 5.5 V battery is joined to 6 Ω and 5 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. 10
  2. bigger
  3. 450
  4. 570
  5. 0.5
  6. 430
  7. 20
  8. 503
  9. 133
  10. less than either one
  11. 537
  12. 1
  13. 5
  14. 25
  15. 165
  16. 500
  17. 800
  18. 0.1
  19. 1
  20. 121
  21. 10
  22. 20
  23. 100
  24. 130
  25. 235
  26. 50
  27. 320
  28. 69
  29. 160
  30. 0.2
  31. 0.25
  32. 0.1
  33. 222
  34. 20
  35. 5
  36. 97
  37. 25
  38. 0.1
  39. 0.1
  40. 0.5

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