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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 480 · 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.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  2. 2.🧮 A 22 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)?
  3. 3.🧮 A 1.6 V battery is joined to 4 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 Two resistors in parallel give a total that is … (a) less than either one (b) more than either one (c) always zero (d) their sum
  5. 5.🧮 Adding another resistor in series makes the total resistance … (a) zero (b) smaller (c) stay the same (d) bigger
  6. 6.🧮 Resistors of 10 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  7. 7.🧮 Resistors of 22 Ω, 22 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 Resistors of 100 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  9. 9.🧮 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)?
  10. 10.🧮 Resistors of 100 Ω, 100 Ω, 470 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  11. 11.🧮 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)?
  12. 12.🧮 A 4 V battery is joined to 2 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  13. 13.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 A 22 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)?
  16. 16.🧮 Resistors of 150 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 220 Ω, 33 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 A 33 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)?
  19. 19.🧮 A 33 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)?
  20. 20.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 A 220 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)?
  23. 23.🧮 Resistors of 68 Ω, 47 Ω, 470 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 A 220 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)?
  27. 27.🧮 A 7 V battery is joined to 12 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  28. 28.🧮 A 20 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.🧮 A 15 V battery is joined to 10 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  30. 30.🧮 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)?
  31. 31.🧮 A 10 V battery is joined to 4 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  32. 32.🧮 A 33 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.🧮 A 1 V battery is joined to 2 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 Resistors of 47 Ω, 20 Ω, 68 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 Resistors of 22 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 A 150 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)?
  39. 39.🧮 A 3.5 V battery is joined to 10 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 A 7.5 V battery is joined to 10 Ω and 5 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. 100
  2. 522
  3. 0.1
  4. less than either one
  5. bigger
  6. 160
  7. 91
  8. 320
  9. 233
  10. 692
  11. 45
  12. 0.5
  13. 25
  14. 100
  15. 187
  16. 183
  17. 723
  18. 133
  19. 268
  20. 50
  21. 50
  22. 230
  23. 618
  24. 20
  25. 20
  26. 225
  27. 0.5
  28. 130
  29. 1
  30. 330
  31. 1
  32. 143
  33. 0.2
  34. 203
  35. 72
  36. 10
  37. 165
  38. 160
  39. 0.25
  40. 0.5

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