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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 705 · 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.🧮 A 1.6 V battery is joined to 4 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  2. 2.🧮 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
  3. 3.🧮 A 0.8 V battery is joined to 6 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 A 1.75 V battery is joined to 3 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 Resistors of 470 Ω, 20 Ω, 33 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  7. 7.🧮 An 8 V battery is joined to 4 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 A 1.1 V battery is joined to 6 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  9. 9.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 Resistors of 68 Ω, 100 Ω, 330 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  11. 11.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 Resistors of 50 Ω, 330 Ω, 20 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 A 470 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)?
  14. 14.🧮 Resistors of 22 Ω, 470 Ω, 47 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 Resistors of 100 Ω, 10 Ω, 470 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) bigger (c) zero (d) smaller
  17. 17.🧮 Resistors of 470 Ω, 22 Ω, 100 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 A 1.5 V battery is joined to 3 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 Resistors of 22 Ω, 150 Ω, 47 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 A 3.2 V battery is joined to 10 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 A 2.4 V battery is joined to 8 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  22. 22.🧮 A 50 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)?
  23. 23.🧮 An 8 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 Resistors of 100 Ω, 68 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 A 20 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)?
  26. 26.🧮 Resistors of 220 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 Resistors of 20 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 Resistors of 150 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 A 1.2 V battery is joined to 8 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 A 2 V battery is joined to 5 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  32. 32.🧮 Resistors of 10 Ω, 20 Ω, 150 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 A 1.5 V battery is joined to 5 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 A 330 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)?
  35. 35.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 A 10 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)?
  38. 38.🧮 Resistors of 68 Ω, 68 Ω, 100 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 A 0.9 V battery is joined to 4 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. 0.1
  2. less than either one
  3. 0.1
  4. 0.25
  5. 5
  6. 591
  7. 0.5
  8. 0.1
  9. 500
  10. 545
  11. 100
  12. 420
  13. 705
  14. 639
  15. 800
  16. bigger
  17. 922
  18. 0.1
  19. 287
  20. 0.2
  21. 0.2
  22. 550
  23. 0.5
  24. 236
  25. 120
  26. 370
  27. 10
  28. 170
  29. 172
  30. 0.1
  31. 0.2
  32. 213
  33. 0.1
  34. 495
  35. 10
  36. 10
  37. 35
  38. 258
  39. 0.1
  40. 5

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