← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 348 · 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 1.1 V battery is joined to 3 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  2. 2.🧮 Adding another resistor in series makes the total resistance … (a) zero (b) stay the same (c) bigger (d) smaller
  3. 3.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 A 50 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)?
  5. 5.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 Two resistors in parallel give a total that is … (a) less than either one (b) their sum (c) more than either one (d) always zero
  7. 7.🧮 Resistors of 470 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 A 3.2 V battery is joined to 4 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 A 20 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)?
  13. 13.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 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)?
  18. 18.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 A 150 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)?
  20. 20.🧮 Resistors of 10 Ω, 33 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 Resistors of 470 Ω, 220 Ω, 470 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 10 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Resistors of 220 Ω, 22 Ω, 330 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 A 68 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)?
  26. 26.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 Resistors of 150 Ω, 10 Ω, 470 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 Resistors of 100 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 Resistors of 220 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Resistors of 50 Ω, 470 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 A 0.8 V battery is joined to 6 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 Resistors of 22 Ω, 470 Ω, 22 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 A 100 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)?
  35. 35.🧮 Resistors of 10 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 Resistors of 33 Ω, 33 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 Resistors of 68 Ω, 68 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 A 0.9 V battery is joined to 5 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 Resistors of 100 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 0.1
  2. bigger
  3. 5
  4. 100
  5. 100
  6. less than either one
  7. 490
  8. 50
  9. 500
  10. 0.2
  11. 110
  12. 255
  13. 25
  14. 100
  15. 20
  16. 25
  17. 155
  18. 20
  19. 650
  20. 373
  21. 1170
  22. 78
  23. 902
  24. 235
  25. 73
  26. 165
  27. 20
  28. 780
  29. 133
  30. 370
  31. 567
  32. 0.1
  33. 734
  34. 110
  35. 57
  36. 25
  37. 86
  38. 286
  39. 0.1
  40. 200

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