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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 77 · 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.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) zero (c) smaller (d) bigger
  2. 2.🧮 A 2.25 V battery is joined to 5 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  3. 3.🧮 An 11 V battery is joined to 6 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 A 470 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)?
  6. 6.🧮 A 3.5 V battery is joined to 12 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  7. 7.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 Resistors of 47 Ω, 33 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  9. 9.🧮 A 1.4 V battery is joined to 2 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  10. 10.🧮 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
  11. 11.🧮 A 47 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)?
  12. 12.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Resistors of 100 Ω, 470 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 Resistors of 220 Ω, 100 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 Resistors of 22 Ω, 68 Ω, 10 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 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)?
  17. 17.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 A 2 V battery is joined to 4 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  20. 20.🧮 A 2.2 V battery is joined to 5 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 A 1 V battery is joined to 5 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  23. 23.🧮 A 20 V battery is joined to 10 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 A 47 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)?
  26. 26.🧮 Resistors of 33 Ω, 33 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 Resistors of 68 Ω, 150 Ω, 10 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 A 68 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)?
  30. 30.🧮 Resistors of 22 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Resistors of 22 Ω, 150 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 A 1.2 V battery is joined to 3 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 A 22 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.🧮 A 14 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 A 330 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)?
  37. 37.🧮 A 14 V battery is joined to 2 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  38. 38.🧮 Resistors of 150 Ω, 100 Ω, 220 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 A 1.2 V battery is joined to 2 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 A 1.8 V battery is joined to 4 Ω and 5 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. bigger
  2. 0.25
  3. 1
  4. 100
  5. 520
  6. 0.25
  7. 500
  8. 148
  9. 0.1
  10. less than either one
  11. 97
  12. 165
  13. 617
  14. 342
  15. 110
  16. 225
  17. 50
  18. 110
  19. 0.2
  20. 0.2
  21. 5
  22. 0.1
  23. 1
  24. 235
  25. 57
  26. 396
  27. 10
  28. 448
  29. 178
  30. 32
  31. 219
  32. 50
  33. 0.2
  34. 47
  35. 1
  36. 830
  37. 1
  38. 492
  39. 0.2
  40. 0.2

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