← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 590 · 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) zero (b) stay the same (c) bigger (d) smaller
  2. 2.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 A 12 V battery is joined to 8 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 A 330 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)?
  5. 5.🧮 A 2.8 V battery is joined to 4 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  6. 6.🧮 Two resistors in parallel give a total that is … (a) their sum (b) more than either one (c) less than either one (d) always zero
  7. 7.🧮 Resistors of 22 Ω, 330 Ω, 68 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 Resistors of 10 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  9. 9.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 An 8 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 A 1.2 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  12. 12.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Resistors of 22 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Resistors of 22 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 A 68 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)?
  18. 18.🧮 A 0.5 V battery is joined to 2 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 A 330 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)?
  20. 20.🧮 A 1.7 V battery is joined to 12 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 A 1.1 V battery is joined to 6 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  22. 22.🧮 Resistors of 47 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 A 20 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)?
  25. 25.🧮 A 3.5 V battery is joined to 2 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 A 470 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)?
  27. 27.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  29. 29.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  31. 31.🧮 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)?
  32. 32.🧮 A 1 V battery is joined to 5 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 A 33 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.🧮 A 4.4 V battery is joined to 12 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 A 12 V battery is joined to 10 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 A 14 V battery is joined to 2 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 A 100 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)?
  40. 40.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. bigger
  2. 110
  3. 1
  4. 340
  5. 0.2
  6. less than either one
  7. 470
  8. 57
  9. 100
  10. 0.5
  11. 0.2
  12. 25
  13. 100
  14. 492
  15. 50
  16. 172
  17. 78
  18. 0.1
  19. 335
  20. 0.1
  21. 0.1
  22. 147
  23. 165
  24. 130
  25. 0.25
  26. 635
  27. 50
  28. 20
  29. 10
  30. 500
  31. 143
  32. 0.1
  33. 20
  34. 83
  35. 0.2
  36. 1
  37. 5
  38. 1
  39. 125
  40. 100

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