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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 566 · 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) more than either one (b) less than either one (c) always zero (d) their sum
  2. 2.🧮 Adding another resistor in series makes the total resistance … (a) smaller (b) zero (c) stay the same (d) bigger
  3. 3.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 Resistors of 330 Ω, 330 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 Resistors of 150 Ω, 22 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 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)?
  9. 9.🧮 A 0.8 V battery is joined to 2 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  10. 10.🧮 A 22 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)?
  11. 11.🧮 Resistors of 220 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 Resistors of 150 Ω, 470 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 A 20 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)?
  15. 15.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 Resistors of 150 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  19. 19.🧮 A 15 V battery is joined to 3 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  20. 20.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 A 150 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)?
  24. 24.🧮 Resistors of 330 Ω, 10 Ω, 100 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 Five equal 125 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 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)?
  27. 27.🧮 A 220 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)?
  28. 28.🧮 A 5 V battery is joined to 2 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  29. 29.🧮 Resistors of 22 Ω, 330 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  31. 31.🧮 A 5.5 V battery is joined to 5 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  32. 32.🧮 A 1.2 V battery is joined to 8 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 Resistors of 68 Ω, 20 Ω, 50 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 Resistors of 68 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 A 100 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)?
  36. 36.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 Resistors of 22 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 A 10 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)?
  39. 39.🧮 A 20 Ω resistor is joined in series with two equal 50 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  40. 40.🧮 Resistors of 10 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. less than either one
  2. bigger
  3. 10
  4. 110
  5. 990
  6. 50
  7. 642
  8. 210
  9. 0.1
  10. 32
  11. 230
  12. 688
  13. 235
  14. 255
  15. 50
  16. 25
  17. 100
  18. 160
  19. 1
  20. 5
  21. 20
  22. 165
  23. 385
  24. 910
  25. 25
  26. 215
  27. 320
  28. 0.5
  29. 374
  30. 20
  31. 0.5
  32. 0.1
  33. 171
  34. 538
  35. 120
  36. 5
  37. 122
  38. 60
  39. 45
  40. 60

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