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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 232 · 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.🧮 Resistors of 33 Ω, 33 Ω, 47 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 A 1.2 V battery is joined to 2 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 An 18 V battery is joined to 6 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 Adding another resistor in series makes the total resistance … (a) bigger (b) stay the same (c) smaller (d) zero
  6. 6.🧮 A 15 V battery is joined to 10 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  7. 7.🧮 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)?
  8. 8.🧮 A 330 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)?
  9. 9.🧮 Three equal 60 Ω resistors are joined in parallel. 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) more than either one (b) less than either one (c) always zero (d) their sum
  12. 12.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 A 1 V battery is joined to 4 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 Resistors of 330 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 Resistors of 50 Ω, 470 Ω, 22 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 An 8 V battery is joined to 10 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  18. 18.🧮 A 2.8 V battery is joined to 6 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 Resistors of 68 Ω, 220 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 A 20 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)?
  21. 21.🧮 A 3 V battery is joined to 3 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  22. 22.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 A 470 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)?
  24. 24.🧮 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)?
  25. 25.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 Resistors of 68 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 A 0.6 V battery is joined to 2 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  28. 28.🧮 Two equal 470 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 33 Ω, 50 Ω, 10 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 Resistors of 33 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 A 14 V battery is joined to 12 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 A 10 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)?
  35. 35.🧮 Resistors of 22 Ω, 10 Ω, 47 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 A 7 V battery is joined to 2 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 A 470 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)?
  38. 38.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Five equal 125 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. 263
  2. 500
  3. 0.2
  4. 1
  5. bigger
  6. 1
  7. 120
  8. 335
  9. 20
  10. 165
  11. less than either one
  12. 100
  13. 50
  14. 0.1
  15. 430
  16. 589
  17. 0.5
  18. 0.2
  19. 310
  20. 520
  21. 0.5
  22. 5
  23. 570
  24. 122
  25. 100
  26. 78
  27. 0.1
  28. 235
  29. 50
  30. 103
  31. 50
  32. 80
  33. 1
  34. 35
  35. 147
  36. 1
  37. 490
  38. 20
  39. 100
  40. 25

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