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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 226 · 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) more than either one (d) their sum
  2. 2.🧮 A 100 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)?
  3. 3.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 Adding another resistor in series makes the total resistance … (a) bigger (b) zero (c) stay the same (d) smaller
  7. 7.🧮 Resistors of 470 Ω, 20 Ω, 50 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 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)?
  9. 9.🧮 A 1 V battery is joined to 2 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  10. 10.🧮 Resistors of 22 Ω, 68 Ω, 150 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  11. 11.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 A 2.4 V battery is joined to 6 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  14. 14.🧮 A 330 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)?
  15. 15.🧮 A 4 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 Resistors of 150 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 150 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 A 47 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)?
  19. 19.🧮 Resistors of 22 Ω, 150 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Resistors of 68 Ω, 100 Ω, 68 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 220 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Resistors of 47 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 A 0.7 V battery is joined to 5 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 Resistors of 20 Ω, 20 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 A 2 V battery is joined to 8 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  28. 28.🧮 A 12 V battery is joined to 2 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  29. 29.🧮 A 100 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)?
  30. 30.🧮 Resistors of 10 Ω, 100 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 A 20 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.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 A 14 V battery is joined to 12 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  38. 38.🧮 A 1.1 V battery is joined to 8 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 Resistors of 220 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  40. 40.🧮 Resistors of 47 Ω, 330 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. less than either one
  2. 105
  3. 25
  4. 235
  5. 165
  6. bigger
  7. 562
  8. 175
  9. 0.1
  10. 250
  11. 110
  12. 20
  13. 0.2
  14. 380
  15. 0.25
  16. 183
  17. 218
  18. 212
  19. 322
  20. 10
  21. 286
  22. 440
  23. 377
  24. 5
  25. 0.1
  26. 73
  27. 0.1
  28. 1
  29. 335
  30. 330
  31. 10
  32. 100
  33. 10
  34. 100
  35. 70
  36. 100
  37. 1
  38. 0.1
  39. 550
  40. 477

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