← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 240 · 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.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  2. 2.🧮 A 0.9 V battery is joined to 6 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  3. 3.🧮 A 220 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)?
  4. 4.🧮 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
  5. 5.🧮 Resistors of 330 Ω, 68 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 Adding another resistor in series makes the total resistance … (a) bigger (b) smaller (c) stay the same (d) zero
  7. 7.🧮 A 150 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)?
  8. 8.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Resistors of 68 Ω, 330 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 A 1.5 V battery is joined to 3 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 Resistors of 68 Ω, 10 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 A 6 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  14. 14.🧮 Resistors of 10 Ω, 33 Ω, 470 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 A 13 V battery is joined to 10 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 Resistors of 100 Ω, 470 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 A 3 V battery is joined to 8 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  18. 18.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 Resistors of 220 Ω, 20 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 Resistors of 20 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 A 0.6 V battery is joined to 3 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 A 2.2 V battery is joined to 8 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  27. 27.🧮 A 150 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)?
  28. 28.🧮 A 330 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)?
  29. 29.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 Resistors of 22 Ω, 68 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 A 0.8 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 A 47 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)?
  36. 36.🧮 Resistors of 20 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 An 11 V battery is joined to 6 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  38. 38.🧮 Resistors of 33 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 Resistors of 33 Ω, 20 Ω, 20 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  40. 40.🧮 Resistors of 22 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 10
  2. 0.1
  3. 230
  4. less than either one
  5. 618
  6. bigger
  7. 260
  8. 100
  9. 408
  10. 0.25
  11. 500
  12. 548
  13. 1
  14. 523
  15. 1
  16. 603
  17. 0.25
  18. 5
  19. 110
  20. 25
  21. 165
  22. 25
  23. 287
  24. 67
  25. 0.1
  26. 0.2
  27. 160
  28. 355
  29. 50
  30. 158
  31. 50
  32. 20
  33. 0.1
  34. 100
  35. 52
  36. 70
  37. 1
  38. 101
  39. 120
  40. 55

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