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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 723 · 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.🧮 Adding another resistor in series makes the total resistance … (a) smaller (b) zero (c) bigger (d) stay the same
  2. 2.🧮 Resistors of 470 Ω, 150 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  3. 3.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 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)?
  5. 5.🧮 Resistors of 470 Ω, 470 Ω, 470 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 A 1.6 V battery is joined to 4 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 Resistors of 50 Ω, 47 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  9. 9.🧮 A 10 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)?
  10. 10.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Resistors of 22 Ω, 150 Ω, 20 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 A 2 V battery is joined to 5 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 Two resistors in parallel give a total that is … (a) less than either one (b) more than either one (c) their sum (d) always zero
  16. 16.🧮 Resistors of 47 Ω, 150 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 100 Ω, 100 Ω, 22 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 20 Ω, 22 Ω, 220 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 A 3.25 V battery is joined to 8 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 Resistors of 20 Ω, 47 Ω, 10 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 A 47 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)?
  26. 26.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 22 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Three equal 75 Ω resistors are joined in parallel. 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.🧮 Resistors of 470 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 Resistors of 22 Ω, 47 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 A 10 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)?
  35. 35.🧮 A 220 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)?
  36. 36.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 A 1.1 V battery is joined to 6 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 Resistors of 150 Ω, 220 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. bigger
  2. 950
  3. 10
  4. 120
  5. 1443
  6. 20
  7. 0.1
  8. 144
  9. 110
  10. 165
  11. 5
  12. 20
  13. 202
  14. 0.2
  15. less than either one
  16. 247
  17. 272
  18. 5
  19. 500
  20. 100
  21. 20
  22. 312
  23. 0.25
  24. 297
  25. 52
  26. 10
  27. 122
  28. 25
  29. 50
  30. 520
  31. 25
  32. 89
  33. 5
  34. 120
  35. 330
  36. 235
  37. 110
  38. 50
  39. 0.1
  40. 417

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