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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 362 · 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.🧮 A 10 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)?
  2. 2.🧮 Two resistors in parallel give a total that is … (a) less than either one (b) their sum (c) always zero (d) more than either one
  3. 3.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Resistors of 330 Ω, 220 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  5. 5.🧮 Two equal 40 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) zero (b) stay the same (c) bigger (d) smaller
  7. 7.🧮 A 2.4 V battery is joined to 4 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 A 150 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 20 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  11. 11.🧮 Two equal 200 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 330 Ω, 20 Ω, 150 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 A 2.6 V battery is joined to 8 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 A 100 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)?
  16. 16.🧮 A 33 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)?
  17. 17.🧮 A 100 Ω resistor is joined in series with two equal 40 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  18. 18.🧮 Resistors of 330 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  19. 19.🧮 Resistors of 68 Ω, 150 Ω, 68 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 A 2.5 V battery is joined to 2 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 Resistors of 220 Ω, 33 Ω, 50 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 47 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 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)?
  25. 25.🧮 A 68 Ω resistor is joined in series with two equal 40 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  26. 26.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 A 100 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)?
  29. 29.🧮 Resistors of 220 Ω, 50 Ω, 47 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 Resistors of 33 Ω, 68 Ω, 10 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 A 330 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)?
  32. 32.🧮 Resistors of 150 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 A 5.5 V battery is joined to 10 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 A 220 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)?
  35. 35.🧮 A 7 V battery is joined to 5 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 Resistors of 220 Ω, 220 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 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)?
  38. 38.🧮 A 330 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)?
  39. 39.🧮 Resistors of 33 Ω, 68 Ω, 22 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  40. 40.🧮 A 4 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. 15
  2. less than either one
  3. 165
  4. 770
  5. 20
  6. bigger
  7. 0.2
  8. 10
  9. 315
  10. 53
  11. 100
  12. 20
  13. 830
  14. 0.2
  15. 210
  16. 38
  17. 120
  18. 550
  19. 436
  20. 0.25
  21. 353
  22. 267
  23. 5
  24. 230
  25. 88
  26. 50
  27. 25
  28. 110
  29. 337
  30. 331
  31. 440
  32. 300
  33. 0.25
  34. 455
  35. 1
  36. 490
  37. 133
  38. 355
  39. 273
  40. 0.5

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