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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 869 · 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 0.5 V battery is joined to 2 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  2. 2.🧮 Resistors of 10 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  3. 3.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Resistors of 470 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  5. 5.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 Resistors of 470 Ω, 220 Ω, 150 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  7. 7.🧮 A 470 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)?
  8. 8.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 A 4 V battery is joined to 3 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  10. 10.🧮 Resistors of 47 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  11. 11.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 A 22 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)?
  13. 13.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 A 2 V battery is joined to 12 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 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)?
  19. 19.🧮 Two resistors in parallel give a total that is … (a) always zero (b) their sum (c) less than either one (d) more than either one
  20. 20.🧮 A 470 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)?
  21. 21.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 A 1.5 V battery is joined to 10 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  23. 23.🧮 A 5 V battery is joined to 6 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 A 10 V battery is joined to 6 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  25. 25.🧮 A 9 V battery is joined to 12 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 20 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Resistors of 22 Ω, 220 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 Adding another resistor in series makes the total resistance … (a) zero (b) stay the same (c) smaller (d) bigger
  30. 30.🧮 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)?
  31. 31.🧮 Resistors of 10 Ω, 10 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 A 5 V battery is joined to 4 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 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)?
  34. 34.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 A 50 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)?
  36. 36.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 Resistors of 22 Ω, 50 Ω, 150 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 A 3.75 V battery is joined to 3 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 Resistors of 22 Ω, 33 Ω, 220 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 0.1
  2. 30
  3. 110
  4. 492
  5. 235
  6. 1310
  7. 635
  8. 10
  9. 0.5
  10. 377
  11. 100
  12. 27
  13. 25
  14. 0.1
  15. 20
  16. 50
  17. 20
  18. 257
  19. less than either one
  20. 475
  21. 100
  22. 0.1
  23. 0.5
  24. 1
  25. 0.5
  26. 50
  27. 67
  28. 342
  29. bigger
  30. 175
  31. 170
  32. 0.5
  33. 47
  34. 50
  35. 150
  36. 5
  37. 255
  38. 5
  39. 0.25
  40. 297

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