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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 284 · 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.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  2. 2.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) zero (c) smaller (d) bigger
  3. 3.🧮 A 16 V battery is joined to 10 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 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)?
  7. 7.🧮 Resistors of 330 Ω, 33 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 Resistors of 10 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  9. 9.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 A 9 V battery is joined to 5 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 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)?
  12. 12.🧮 Resistors of 22 Ω, 20 Ω, 20 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 Two resistors in parallel give a total that is … (a) their sum (b) less than either one (c) more than either one (d) always zero
  14. 14.🧮 A 2.75 V battery is joined to 3 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 A 33 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)?
  16. 16.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 A 3.5 V battery is joined to 6 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  18. 18.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 Resistors of 47 Ω, 50 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 A 2.6 V battery is joined to 3 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 A 2.75 V battery is joined to 5 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  23. 23.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 Resistors of 22 Ω, 150 Ω, 330 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 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)?
  27. 27.🧮 An 8 V battery is joined to 8 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  28. 28.🧮 A 2.2 V battery is joined to 12 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  29. 29.🧮 Resistors of 20 Ω, 33 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 A 1 V battery is joined to 2 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 Resistors of 20 Ω, 20 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 A 22 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)?
  33. 33.🧮 Resistors of 220 Ω, 10 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 Resistors of 22 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 A 1.3 V battery is joined to 5 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 Resistors of 68 Ω, 47 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 A 1.3 V battery is joined to 3 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 A 22 V battery is joined to 10 Ω and 12 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. 100
  2. bigger
  3. 1
  4. 10
  5. 100
  6. 133
  7. 431
  8. 20
  9. 10
  10. 1
  11. 225
  12. 212
  13. less than either one
  14. 0.25
  15. 533
  16. 20
  17. 0.25
  18. 110
  19. 107
  20. 0.2
  21. 5
  22. 0.25
  23. 5
  24. 500
  25. 522
  26. 520
  27. 0.5
  28. 0.1
  29. 523
  30. 0.2
  31. 140
  32. 187
  33. 280
  34. 55
  35. 25
  36. 0.1
  37. 125
  38. 165
  39. 0.1
  40. 1

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