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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 375 · 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.🧮 Two resistors in parallel give a total that is … (a) always zero (b) less than either one (c) their sum (d) more than either one
  2. 2.🧮 Adding another resistor in series makes the total resistance … (a) bigger (b) stay the same (c) smaller (d) zero
  3. 3.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 Resistors of 22 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 A 1.6 V battery is joined to 2 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 A 68 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)?
  9. 9.🧮 An 8 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  10. 10.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Resistors of 20 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 Resistors of 50 Ω, 220 Ω, 330 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 A 0.6 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 A 13 V battery is joined to 5 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  17. 17.🧮 A 1.2 V battery is joined to 6 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  18. 18.🧮 A 2 V battery is joined to 4 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 A 1.7 V battery is joined to 5 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  20. 20.🧮 A 1.4 V battery is joined to 2 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 Resistors of 50 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 22 Ω, 33 Ω, 470 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 A 17 V battery is joined to 5 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 A 9 V battery is joined to 3 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  25. 25.🧮 Resistors of 22 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 A 3.5 V battery is joined to 10 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  27. 27.🧮 Resistors of 100 Ω, 20 Ω, 220 Ω and 100 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 220 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  29. 29.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  31. 31.🧮 A 47 Ω resistor is joined in series with two equal 20 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  32. 32.🧮 A 1.3 V battery is joined to 3 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 Resistors of 20 Ω, 220 Ω, 100 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 A 150 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)?
  35. 35.🧮 Resistors of 10 Ω, 33 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 Resistors of 220 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 Resistors of 47 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  40. 40.🧮 Resistors of 22 Ω, 330 Ω, 68 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. less than either one
  2. bigger
  3. 10
  4. 100
  5. 44
  6. 50
  7. 0.2
  8. 568
  9. 0.5
  10. 25
  11. 50
  12. 25
  13. 53
  14. 647
  15. 0.1
  16. 1
  17. 0.1
  18. 0.2
  19. 0.1
  20. 0.1
  21. 520
  22. 625
  23. 1
  24. 1
  25. 242
  26. 0.25
  27. 440
  28. 160
  29. 50
  30. 10
  31. 57
  32. 0.1
  33. 362
  34. 175
  35. 513
  36. 240
  37. 10
  38. 235
  39. 94
  40. 488

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