← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 561 · 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 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  2. 2.🧮 Resistors of 100 Ω, 220 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  3. 3.🧮 A 0.9 V battery is joined to 4 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 Resistors of 50 Ω, 33 Ω, 10 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  5. 5.🧮 A 1.1 V battery is joined to 6 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  6. 6.🧮 Two resistors in parallel give a total that is … (a) more than either one (b) less than either one (c) their sum (d) always zero
  7. 7.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 A 20 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)?
  9. 9.🧮 A 470 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)?
  10. 10.🧮 Adding another resistor in series makes the total resistance … (a) bigger (b) smaller (c) stay the same (d) zero
  11. 11.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 A 2.5 V battery is joined to 3 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  13. 13.🧮 Resistors of 50 Ω, 330 Ω, 220 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 A 0.4 V battery is joined to 2 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 A 2.8 V battery is joined to 4 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  17. 17.🧮 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)?
  18. 18.🧮 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)?
  19. 19.🧮 Resistors of 470 Ω, 20 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 Resistors of 22 Ω, 330 Ω, 220 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 Resistors of 150 Ω, 33 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 100 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 A 1.3 V battery is joined to 5 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  25. 25.🧮 A 4 V battery is joined to 4 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  29. 29.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 Resistors of 20 Ω, 330 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Resistors of 100 Ω, 22 Ω, 68 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 Resistors of 68 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 A 1.7 V battery is joined to 5 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 A 33 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)?
  35. 35.🧮 A 6 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 A 33 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)?
  38. 38.🧮 A 2 V battery is joined to 6 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 A 220 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)?
  40. 40.🧮 Resistors of 330 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 110
  2. 370
  3. 0.1
  4. 563
  5. 0.1
  6. less than either one
  7. 5
  8. 25
  9. 480
  10. bigger
  11. 10
  12. 0.5
  13. 647
  14. 10
  15. 0.1
  16. 0.2
  17. 268
  18. 60
  19. 558
  20. 792
  21. 193
  22. 110
  23. 100
  24. 0.1
  25. 0.25
  26. 50
  27. 100
  28. 50
  29. 20
  30. 397
  31. 660
  32. 218
  33. 0.1
  34. 198
  35. 1
  36. 20
  37. 133
  38. 0.2
  39. 720
  40. 660

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