← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 720 · 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.🧮 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)?
  2. 2.🧮 Adding another resistor in series makes the total resistance … (a) smaller (b) zero (c) stay the same (d) bigger
  3. 3.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 An 8 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 A 2 V battery is joined to 6 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  6. 6.🧮 Resistors of 10 Ω, 50 Ω, 47 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  7. 7.🧮 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
  8. 8.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 A 2.8 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  10. 10.🧮 A 1.8 V battery is joined to 4 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 Resistors of 10 Ω, 20 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 A 7 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 Resistors of 50 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 A 2 V battery is joined to 5 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  17. 17.🧮 Resistors of 150 Ω, 150 Ω, 100 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 Five equal 125 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 A 17 V battery is joined to 12 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  20. 20.🧮 A 1.25 V battery is joined to 3 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 A 330 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)?
  23. 23.🧮 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)?
  24. 24.🧮 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)?
  25. 25.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 A 3 V battery is joined to 4 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  27. 27.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  29. 29.🧮 Resistors of 220 Ω, 50 Ω, 33 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 A 2 V battery is joined to 2 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 Resistors of 470 Ω, 33 Ω, 20 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 Resistors of 10 Ω, 22 Ω, 50 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 An 18 V battery is joined to 10 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 A 10 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)?
  38. 38.🧮 A 7 V battery is joined to 12 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Resistors of 33 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 175
  2. bigger
  3. 165
  4. 0.5
  5. 0.25
  6. 157
  7. less than either one
  8. 10
  9. 0.2
  10. 0.2
  11. 500
  12. 10
  13. 5
  14. 0.5
  15. 200
  16. 0.2
  17. 730
  18. 25
  19. 1
  20. 0.25
  21. 235
  22. 495
  23. 385
  24. 185
  25. 50
  26. 0.25
  27. 100
  28. 20
  29. 403
  30. 0.2
  31. 110
  32. 673
  33. 5
  34. 100
  35. 115
  36. 1
  37. 245
  38. 0.5
  39. 500
  40. 133

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids