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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 840 · 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.🧮 Adding another resistor in series makes the total resistance … (a) bigger (b) smaller (c) stay the same (d) zero
  2. 2.🧮 An 11 V battery is joined to 10 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  3. 3.🧮 Resistors of 220 Ω, 220 Ω, 150 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  4. 4.🧮 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)?
  5. 5.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 An 8 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  9. 9.🧮 A 33 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)?
  10. 10.🧮 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
  11. 11.🧮 A 10 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)?
  12. 12.🧮 A 1.2 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  13. 13.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Resistors of 33 Ω, 33 Ω, 20 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 Resistors of 220 Ω, 470 Ω, 68 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 33 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 A 3.2 V battery is joined to 12 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  20. 20.🧮 A 150 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.🧮 Resistors of 10 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 A 2.5 V battery is joined to 6 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  23. 23.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 A 5 V battery is joined to 4 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  25. 25.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 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)?
  28. 28.🧮 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)?
  29. 29.🧮 A 3 V battery is joined to 5 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  30. 30.🧮 An 11 V battery is joined to 5 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 A 220 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)?
  32. 32.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 A 1.6 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  35. 35.🧮 A 7 V battery is joined to 4 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 An 8 V battery is joined to 12 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 A 2.4 V battery is joined to 8 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  38. 38.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 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)?
  40. 40.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. bigger
  2. 0.5
  3. 1060
  4. 335
  5. 100
  6. 165
  7. 50
  8. 0.5
  9. 83
  10. less than either one
  11. 110
  12. 0.2
  13. 100
  14. 5
  15. 306
  16. 978
  17. 253
  18. 50
  19. 0.2
  20. 650
  21. 78
  22. 0.25
  23. 20
  24. 0.5
  25. 5
  26. 20
  27. 520
  28. 522
  29. 0.2
  30. 1
  31. 720
  32. 100
  33. 5
  34. 0.1
  35. 1
  36. 0.5
  37. 0.2
  38. 20
  39. 57
  40. 110

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