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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 292 · 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.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  2. 2.🧮 Adding another resistor in series makes the total resistance … (a) smaller (b) stay the same (c) zero (d) bigger
  3. 3.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 A 6 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 Resistors of 150 Ω, 50 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 A 47 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)?
  8. 8.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 A 22 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)?
  10. 10.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Two resistors in parallel give a total that is … (a) always zero (b) more than either one (c) less than either one (d) their sum
  12. 12.🧮 Resistors of 10 Ω, 150 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 A 68 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)?
  14. 14.🧮 A 4 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 A 1.4 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 A 20 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)?
  18. 18.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 A 1.4 V battery is joined to 3 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  20. 20.🧮 Resistors of 10 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 Resistors of 150 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 A 0.9 V battery is joined to 5 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  23. 23.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 Resistors of 100 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 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)?
  27. 27.🧮 Resistors of 68 Ω, 330 Ω, 50 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Resistors of 220 Ω, 330 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 Five equal 125 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 Resistors of 100 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 Resistors of 470 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 Resistors of 470 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 A 50 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)?
  36. 36.🧮 A 2.75 V battery is joined to 5 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 A 5 V battery is joined to 3 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  38. 38.🧮 Resistors of 68 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 A 33 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)?
  40. 40.🧮 A 2.4 V battery is joined to 8 Ω and 4 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. 10
  2. bigger
  3. 5
  4. 1
  5. 210
  6. 5
  7. 547
  8. 500
  9. 32
  10. 165
  11. less than either one
  12. 380
  13. 233
  14. 0.25
  15. 0.1
  16. 5
  17. 45
  18. 50
  19. 0.2
  20. 480
  21. 300
  22. 0.1
  23. 100
  24. 110
  25. 50
  26. 122
  27. 481
  28. 572
  29. 25
  30. 120
  31. 20
  32. 520
  33. 10
  34. 490
  35. 100
  36. 0.25
  37. 1
  38. 101
  39. 533
  40. 0.2

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