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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 812 · 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 2 V battery is joined to 6 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  2. 2.🧮 Two resistors in parallel give a total that is … (a) less than either one (b) always zero (c) more than either one (d) their sum
  3. 3.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 A 0.8 V battery is joined to 4 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) smaller (c) bigger (d) zero
  6. 6.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 Resistors of 150 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 A 1.8 V battery is joined to 5 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  9. 9.🧮 Resistors of 20 Ω, 47 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 A 5 V battery is joined to 2 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  13. 13.🧮 Resistors of 33 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Five equal 125 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 A 10 V battery is joined to 2 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 Resistors of 150 Ω, 47 Ω, 150 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 A 47 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)?
  22. 22.🧮 Resistors of 470 Ω, 100 Ω, 47 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 A 3.5 V battery is joined to 3 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 An 8 V battery is joined to 10 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  25. 25.🧮 A 470 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.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 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)?
  28. 28.🧮 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)?
  29. 29.🧮 Resistors of 100 Ω, 10 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 A 1.6 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 Resistors of 33 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 A 68 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)?
  33. 33.🧮 Resistors of 68 Ω, 220 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 A 22 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)?
  35. 35.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 A 47 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)?
  38. 38.🧮 An 11 V battery is joined to 10 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 A 22 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)?
  40. 40.🧮 Resistors of 68 Ω, 100 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 0.25
  2. less than either one
  3. 10
  4. 0.1
  5. bigger
  6. 50
  7. 160
  8. 0.2
  9. 397
  10. 235
  11. 100
  12. 0.5
  13. 55
  14. 5
  15. 25
  16. 25
  17. 100
  18. 1
  19. 165
  20. 415
  21. 147
  22. 667
  23. 0.5
  24. 0.5
  25. 570
  26. 10
  27. 970
  28. 175
  29. 260
  30. 0.1
  31. 83
  32. 178
  33. 388
  34. 257
  35. 100
  36. 25
  37. 97
  38. 0.5
  39. 122
  40. 498

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