← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 101 · 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 resistors in parallel give a total that is … (a) more than either one (b) their sum (c) less than either one (d) always zero
  2. 2.🧮 Resistors of 22 Ω, 220 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  3. 3.🧮 A 1.8 V battery is joined to 4 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 A 50 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 50 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 A 100 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)?
  7. 7.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) smaller (c) zero (d) bigger
  8. 8.🧮 A 3.2 V battery is joined to 8 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  9. 9.🧮 A 3.6 V battery is joined to 10 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  10. 10.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 A 220 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)?
  13. 13.🧮 Resistors of 470 Ω, 22 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Resistors of 20 Ω, 150 Ω, 50 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 A 13 V battery is joined to 10 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  18. 18.🧮 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)?
  19. 19.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 An 8 V battery is joined to 2 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 A 2.5 V battery is joined to 4 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  23. 23.🧮 A 220 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)?
  24. 24.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 Resistors of 100 Ω, 20 Ω, 220 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 A 220 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)?
  29. 29.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 Resistors of 22 Ω, 33 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 A 10 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)?
  32. 32.🧮 A 4.5 V battery is joined to 6 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 Resistors of 68 Ω and 33 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 330 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  35. 35.🧮 Five equal 125 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 A 3.6 V battery is joined to 8 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 Resistors of 50 Ω, 150 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 A 47 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)?
  40. 40.🧮 A 20 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)?

Answer key

  1. less than either one
  2. 264
  3. 0.2
  4. 150
  5. 60
  6. 600
  7. bigger
  8. 0.2
  9. 0.2
  10. 10
  11. 20
  12. 385
  13. 592
  14. 50
  15. 690
  16. 110
  17. 1
  18. 198
  19. 500
  20. 1
  21. 10
  22. 0.25
  23. 230
  24. 25
  25. 50
  26. 350
  27. 235
  28. 320
  29. 20
  30. 123
  31. 510
  32. 0.25
  33. 101
  34. 265
  35. 25
  36. 0.2
  37. 10
  38. 420
  39. 97
  40. 520

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