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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 527 · 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.🧮 Adding another resistor in series makes the total resistance … (a) zero (b) bigger (c) stay the same (d) smaller
  2. 2.🧮 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)?
  3. 3.🧮 Resistors of 22 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  4. 4.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 A 2 V battery is joined to 8 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  6. 6.🧮 Resistors of 220 Ω, 100 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  7. 7.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 A 3.2 V battery is joined to 8 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  9. 9.🧮 A 68 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)?
  10. 10.🧮 A 1 V battery is joined to 2 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 A 100 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)?
  12. 12.🧮 Resistors of 22 Ω, 220 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 Resistors of 47 Ω, 20 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 A 1.6 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 A 3 V battery is joined to 4 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 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
  17. 17.🧮 Resistors of 220 Ω, 33 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 A 1.8 V battery is joined to 10 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 Resistors of 20 Ω, 150 Ω, 33 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 A 1.8 V battery is joined to 12 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 A 24 V battery is joined to 12 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  23. 23.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 A 6.5 V battery is joined to 3 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  27. 27.🧮 Resistors of 47 Ω, 47 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  29. 29.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  31. 31.🧮 Resistors of 47 Ω, 100 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 A 3.75 V battery is joined to 3 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 Resistors of 68 Ω, 22 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 A 3.75 V battery is joined to 5 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 Resistors of 33 Ω and 47 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 10 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  39. 39.🧮 Resistors of 33 Ω, 470 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  40. 40.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. bigger
  2. 130
  3. 492
  4. 10
  5. 0.2
  6. 650
  7. 10
  8. 0.2
  9. 88
  10. 0.1
  11. 200
  12. 289
  13. 397
  14. 0.2
  15. 0.25
  16. less than either one
  17. 263
  18. 0.1
  19. 236
  20. 0.1
  21. 25
  22. 1
  23. 50
  24. 100
  25. 20
  26. 0.5
  27. 244
  28. 5
  29. 20
  30. 100
  31. 477
  32. 500
  33. 0.25
  34. 158
  35. 235
  36. 0.25
  37. 80
  38. 15
  39. 653
  40. 100

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