← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 759 · 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 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  2. 2.🧮 A 5 V battery is joined to 4 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  3. 3.🧮 A 50 Ω resistor is joined in series with two equal 40 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  4. 4.🧮 A 10 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)?
  5. 5.🧮 Two resistors in parallel give a total that is … (a) less than either one (b) their sum (c) always zero (d) more than either one
  6. 6.🧮 A 1 V battery is joined to 5 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  7. 7.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Adding another resistor in series makes the total resistance … (a) smaller (b) zero (c) bigger (d) stay the same
  10. 10.🧮 A 0.8 V battery is joined to 3 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 A 220 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)?
  13. 13.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 A 33 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)?
  15. 15.🧮 Resistors of 33 Ω, 33 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 Resistors of 330 Ω, 68 Ω, 33 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 A 0.7 V battery is joined to 4 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  18. 18.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 A 1.4 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  20. 20.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 A 470 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)?
  22. 22.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 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)?
  24. 24.🧮 Resistors of 470 Ω, 20 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 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)?
  26. 26.🧮 Resistors of 470 Ω, 20 Ω, 10 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 22 Ω, 22 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  29. 29.🧮 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)?
  30. 30.🧮 A 4.5 V battery is joined to 12 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 A 9 V battery is joined to 8 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  32. 32.🧮 Resistors of 68 Ω, 100 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 Resistors of 20 Ω, 33 Ω, 47 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 A 20 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)?
  36. 36.🧮 Resistors of 33 Ω, 470 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 A 4 V battery is joined to 10 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 A 330 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)?
  40. 40.🧮 Resistors of 50 Ω, 150 Ω, 470 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 10
  2. 0.5
  3. 70
  4. 20
  5. less than either one
  6. 0.1
  7. 100
  8. 110
  9. bigger
  10. 0.1
  11. 5
  12. 270
  13. 235
  14. 268
  15. 396
  16. 441
  17. 0.1
  18. 20
  19. 0.1
  20. 165
  21. 495
  22. 5
  23. 132
  24. 640
  25. 355
  26. 970
  27. 194
  28. 100
  29. 225
  30. 0.25
  31. 0.5
  32. 178
  33. 133
  34. 50
  35. 520
  36. 603
  37. 100
  38. 0.2
  39. 565
  40. 770

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