← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 321 · 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) bigger (c) stay the same (d) smaller
  2. 2.🧮 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)?
  3. 3.🧮 Two resistors in parallel give a total that is … (a) more than either one (b) always zero (c) their sum (d) less than either one
  4. 4.🧮 A 20 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)?
  5. 5.🧮 Resistors of 220 Ω, 150 Ω, 10 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 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)?
  10. 10.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 A 0.6 V battery is joined to 2 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  13. 13.🧮 A 2.6 V battery is joined to 8 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  14. 14.🧮 Resistors of 10 Ω, 20 Ω, 20 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 A 2.5 V battery is joined to 2 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 A 4.5 V battery is joined to 3 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  17. 17.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 Resistors of 10 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 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)?
  21. 21.🧮 Resistors of 22 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 150 Ω, 100 Ω, 22 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 Resistors of 22 Ω, 330 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 A 470 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)?
  26. 26.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 A 330 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)?
  28. 28.🧮 Resistors of 100 Ω, 100 Ω, 100 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 Resistors of 20 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 Resistors of 10 Ω, 22 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 Resistors of 470 Ω, 150 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 A 0.7 V battery is joined to 3 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 A 10 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)?
  35. 35.🧮 A 3 V battery is joined to 4 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 A 13 V battery is joined to 3 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 Resistors of 470 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 A 0.9 V battery is joined to 5 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 A 3 V battery is joined to 6 Ω and 6 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. bigger
  2. 510
  3. less than either one
  4. 40
  5. 710
  6. 50
  7. 10
  8. 100
  9. 125
  10. 50
  11. 50
  12. 0.1
  13. 0.2
  14. 200
  15. 0.5
  16. 0.5
  17. 100
  18. 50
  19. 230
  20. 268
  21. 44
  22. 422
  23. 25
  24. 502
  25. 570
  26. 25
  27. 355
  28. 350
  29. 170
  30. 79
  31. 100
  32. 950
  33. 0.1
  34. 35
  35. 0.25
  36. 1
  37. 690
  38. 500
  39. 0.1
  40. 0.25

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