← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 429 · 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 33 Ω, 20 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 A 10 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)?
  4. 4.🧮 Resistors of 50 Ω, 68 Ω, 100 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  5. 5.🧮 Adding another resistor in series makes the total resistance … (a) zero (b) stay the same (c) bigger (d) smaller
  6. 6.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 Resistors of 33 Ω, 470 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  9. 9.🧮 A 100 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)?
  10. 10.🧮 A 1.5 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 Two resistors in parallel give a total that is … (a) their sum (b) always zero (c) less than either one (d) more than either one
  12. 12.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 A 220 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)?
  14. 14.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 A 10 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)?
  16. 16.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 47 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 A 33 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)?
  19. 19.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 330 Ω, 100 Ω, 150 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Resistors of 20 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 A 5 V battery is joined to 12 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 A 470 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)?
  27. 27.🧮 Resistors of 33 Ω, 33 Ω, 150 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 A 3.6 V battery is joined to 12 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  29. 29.🧮 Resistors of 68 Ω, 50 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 Resistors of 330 Ω, 220 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 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)?
  33. 33.🧮 A 20 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)?
  34. 34.🧮 A 47 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)?
  35. 35.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 A 2 V battery is joined to 8 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 A 47 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)?
  38. 38.🧮 A 470 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)?
  39. 39.🧮 A 33 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)?
  40. 40.🧮 A 33 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)?

Answer key

  1. 153
  2. 50
  3. 60
  4. 240
  5. bigger
  6. 20
  7. 5
  8. 571
  9. 105
  10. 0.25
  11. less than either one
  12. 50
  13. 330
  14. 25
  15. 35
  16. 235
  17. 80
  18. 53
  19. 110
  20. 100
  21. 10
  22. 600
  23. 67
  24. 100
  25. 0.25
  26. 570
  27. 249
  28. 0.2
  29. 140
  30. 560
  31. 500
  32. 565
  33. 70
  34. 97
  35. 100
  36. 0.1
  37. 212
  38. 475
  39. 143
  40. 58

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