← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 493 · 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.🧮 Adding another resistor in series makes the total resistance … (a) bigger (b) stay the same (c) zero (d) smaller
  2. 2.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 Two resistors in parallel give a total that is … (a) their sum (b) less than either one (c) always zero (d) more than either one
  4. 4.🧮 A 20 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)?
  5. 5.🧮 Resistors of 20 Ω, 150 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 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)?
  7. 7.🧮 Resistors of 10 Ω, 20 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 Resistors of 150 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  9. 9.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 A 0.9 V battery is joined to 6 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 Resistors of 33 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Resistors of 10 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 Resistors of 22 Ω, 100 Ω, 22 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 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)?
  17. 17.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 A 10 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)?
  19. 19.🧮 A 50 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)?
  20. 20.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 A 22 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)?
  22. 22.🧮 A 3 V battery is joined to 5 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  23. 23.🧮 A 3.25 V battery is joined to 3 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 Resistors of 22 Ω, 220 Ω, 220 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 A 5 V battery is joined to 10 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 A 10 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)?
  27. 27.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 A 4 V battery is joined to 4 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  29. 29.🧮 Resistors of 50 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 A 1.4 V battery is joined to 4 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 Resistors of 33 Ω, 33 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 A 3 V battery is joined to 2 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 A 2 V battery is joined to 12 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 A 2.5 V battery is joined to 8 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  35. 35.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 Resistors of 50 Ω, 10 Ω, 47 Ω and 33 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 68 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)?
  39. 39.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. bigger
  2. 20
  3. less than either one
  4. 120
  5. 390
  6. 495
  7. 500
  8. 200
  9. 100
  10. 0.1
  11. 80
  12. 25
  13. 50
  14. 43
  15. 614
  16. 268
  17. 110
  18. 110
  19. 75
  20. 500
  21. 32
  22. 0.2
  23. 0.25
  24. 530
  25. 0.25
  26. 120
  27. 25
  28. 0.25
  29. 118
  30. 0.2
  31. 116
  32. 0.25
  33. 0.1
  34. 0.25
  35. 5
  36. 140
  37. 100
  38. 303
  39. 50
  40. 165

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