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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 581 · 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) more than either one (c) less than either one (d) always zero
  2. 2.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) zero (c) smaller (d) bigger
  3. 3.🧮 Resistors of 10 Ω, 50 Ω, 220 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  4. 4.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 Resistors of 22 Ω, 330 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 A 22 V battery is joined to 10 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  9. 9.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 A 10 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)?
  11. 11.🧮 Resistors of 10 Ω, 47 Ω, 33 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 A 100 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.🧮 Resistors of 470 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 A 1.4 V battery is joined to 12 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 A 5.5 V battery is joined to 8 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  18. 18.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 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)?
  20. 20.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 A 7 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  22. 22.🧮 Resistors of 10 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Resistors of 100 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 A 3 V battery is joined to 10 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  27. 27.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 A 470 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)?
  29. 29.🧮 A 24 V battery is joined to 12 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  30. 30.🧮 Resistors of 68 Ω, 47 Ω, 150 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 Resistors of 10 Ω, 50 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 A 3.75 V battery is joined to 12 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 Resistors of 50 Ω, 20 Ω, 330 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 Resistors of 100 Ω, 10 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 A 1.8 V battery is joined to 6 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 A 2.4 V battery is joined to 10 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  38. 38.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 A 1 V battery is joined to 8 Ω and 2 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. less than either one
  2. bigger
  3. 380
  4. 100
  5. 10
  6. 5
  7. 502
  8. 1
  9. 100
  10. 120
  11. 310
  12. 100
  13. 210
  14. 538
  15. 0.1
  16. 165
  17. 0.5
  18. 50
  19. 970
  20. 50
  21. 0.5
  22. 230
  23. 430
  24. 110
  25. 25
  26. 0.2
  27. 5
  28. 635
  29. 1
  30. 333
  31. 25
  32. 210
  33. 0.25
  34. 730
  35. 330
  36. 0.1
  37. 0.2
  38. 235
  39. 100
  40. 0.1

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