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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 634 · 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.

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  1. 1.🧮 Resistors of 33 Ω, 470 Ω, 47 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 Adding another resistor in series makes the total resistance … (a) zero (b) bigger (c) smaller (d) stay the same
  3. 3.🧮 A 16 V battery is joined to 4 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 Resistors of 20 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  5. 5.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 Two resistors in parallel give a total that is … (a) their sum (b) less than either one (c) more than either one (d) always zero
  7. 7.🧮 Resistors of 470 Ω, 220 Ω, 100 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 A 10 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)?
  10. 10.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 A 47 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)?
  12. 12.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Resistors of 68 Ω, 22 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 Resistors of 470 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 A 47 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)?
  16. 16.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 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)?
  18. 18.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 Resistors of 100 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 Resistors of 10 Ω, 50 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 A 470 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.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 Resistors of 50 Ω, 150 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 Resistors of 22 Ω, 220 Ω, 47 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 Resistors of 50 Ω, 68 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 22 Ω, 220 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 A 50 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)?
  29. 29.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 A 1.4 V battery is joined to 2 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 An 11 V battery is joined to 3 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  32. 32.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 A 0.9 V battery is joined to 4 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 Resistors of 47 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 A 47 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)?
  37. 37.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 A 22 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)?
  39. 39.🧮 A 10 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)?
  40. 40.🧮 Resistors of 330 Ω, 20 Ω, 220 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 770
  2. bigger
  3. 1
  4. 88
  5. 100
  6. less than either one
  7. 1120
  8. 20
  9. 245
  10. 5
  11. 157
  12. 110
  13. 190
  14. 520
  15. 212
  16. 25
  17. 120
  18. 20
  19. 20
  20. 150
  21. 160
  22. 490
  23. 5
  24. 250
  25. 439
  26. 151
  27. 252
  28. 70
  29. 5
  30. 0.1
  31. 1
  32. 235
  33. 0.1
  34. 5
  35. 115
  36. 72
  37. 10
  38. 47
  39. 175
  40. 592

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