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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 73 · 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.🧮 Resistors of 220 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 A 22 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)?
  5. 5.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 A 1 V battery is joined to 8 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  7. 7.🧮 Two resistors in parallel give a total that is … (a) always zero (b) their sum (c) less than either one (d) more than either one
  8. 8.🧮 A 10 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)?
  9. 9.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) bigger (c) zero (d) smaller
  10. 10.🧮 Resistors of 10 Ω, 100 Ω, 33 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  11. 11.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 Resistors of 20 Ω, 47 Ω, 33 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Resistors of 22 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 Resistors of 22 Ω, 47 Ω, 330 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 Resistors of 150 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 47 Ω, 50 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 An 8 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 A 50 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)?
  20. 20.🧮 Resistors of 68 Ω, 50 Ω, 20 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 A 20 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)?
  22. 22.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 Resistors of 220 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 A 150 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)?
  25. 25.🧮 A 16 V battery is joined to 4 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 Four equal 40 Ω resistors are joined in parallel. 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.🧮 A 470 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)?
  29. 29.🧮 A 150 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)?
  30. 30.🧮 Resistors of 20 Ω, 47 Ω, 470 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 A 22 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.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 A 20 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)?
  34. 34.🧮 Resistors of 330 Ω, 47 Ω, 100 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 A 1.5 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 Resistors of 470 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 A 15 V battery is joined to 12 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 A 12 V battery is joined to 6 Ω and 6 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. 550
  2. 165
  3. 100
  4. 27
  5. 100
  6. 0.1
  7. less than either one
  8. 175
  9. bigger
  10. 243
  11. 10
  12. 147
  13. 50
  14. 55
  15. 432
  16. 218
  17. 107
  18. 1
  19. 60
  20. 185
  21. 130
  22. 20
  23. 288
  24. 385
  25. 1
  26. 10
  27. 10
  28. 580
  29. 155
  30. 570
  31. 132
  32. 100
  33. 185
  34. 499
  35. 0.25
  36. 503
  37. 5
  38. 1
  39. 100
  40. 1

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