← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 389 · 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 12 V battery is joined to 10 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  2. 2.🧮 Resistors of 20 Ω, 50 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  3. 3.🧮 A 1.6 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 Two resistors in parallel give a total that is … (a) always zero (b) their sum (c) more than either one (d) less than either one
  5. 5.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 A 1.1 V battery is joined to 3 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  7. 7.🧮 Adding another resistor in series makes the total resistance … (a) bigger (b) smaller (c) stay the same (d) zero
  8. 8.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Resistors of 20 Ω, 470 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Resistors of 22 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  11. 11.🧮 A 15 V battery is joined to 10 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  12. 12.🧮 A 6.5 V battery is joined to 10 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  13. 13.🧮 Resistors of 20 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Resistors of 22 Ω, 50 Ω, 47 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 33 Ω, 50 Ω, 100 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 Resistors of 33 Ω, 68 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  19. 19.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 A 2.75 V battery is joined to 3 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 A 3 V battery is joined to 8 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  22. 22.🧮 Resistors of 470 Ω, 47 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 A 330 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)?
  24. 24.🧮 A 5.5 V battery is joined to 3 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  25. 25.🧮 A 47 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.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 An 11 V battery is joined to 8 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  29. 29.🧮 Resistors of 33 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 Resistors of 22 Ω, 22 Ω, 10 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Resistors of 22 Ω, 10 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 A 22 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)?
  33. 33.🧮 A 1.4 V battery is joined to 6 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 A 10 V battery is joined to 8 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  35. 35.🧮 A 7.5 V battery is joined to 12 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 Resistors of 22 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 Resistors of 50 Ω, 150 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 A 100 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)?
  39. 39.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Resistors of 150 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 1
  2. 170
  3. 0.2
  4. less than either one
  5. 5
  6. 0.1
  7. bigger
  8. 25
  9. 820
  10. 172
  11. 1
  12. 0.5
  13. 40
  14. 10
  15. 50
  16. 187
  17. 205
  18. 121
  19. 50
  20. 0.25
  21. 0.25
  22. 567
  23. 430
  24. 0.5
  25. 52
  26. 100
  27. 10
  28. 1
  29. 133
  30. 76
  31. 54
  32. 42
  33. 0.1
  34. 1
  35. 0.5
  36. 32
  37. 300
  38. 200
  39. 100
  40. 250

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