← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 32 · 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.🧮 Resistors of 22 Ω, 150 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 Resistors of 50 Ω, 50 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  3. 3.🧮 Resistors of 10 Ω, 10 Ω, 100 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  4. 4.🧮 A 22 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)?
  5. 5.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 A 20 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)?
  8. 8.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 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
  10. 10.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Resistors of 470 Ω, 20 Ω, 50 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 A 33 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)?
  13. 13.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Resistors of 10 Ω, 22 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 A 4.4 V battery is joined to 12 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 Resistors of 68 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 Resistors of 150 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  19. 19.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 Resistors of 220 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 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)?
  22. 22.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) smaller (c) bigger (d) zero
  26. 26.🧮 A 2.2 V battery is joined to 3 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  27. 27.🧮 Resistors of 10 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Resistors of 33 Ω, 10 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 Resistors of 33 Ω, 10 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  31. 31.🧮 Resistors of 47 Ω, 33 Ω, 68 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 A 1.5 V battery is joined to 12 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  35. 35.🧮 An 8 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  36. 36.🧮 A 1.5 V battery is joined to 3 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 Resistors of 22 Ω, 330 Ω, 470 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 Resistors of 100 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 Resistors of 20 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  40. 40.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. 205
  2. 150
  3. 130
  4. 522
  5. 25
  6. 50
  7. 185
  8. 50
  9. less than either one
  10. 5
  11. 690
  12. 53
  13. 10
  14. 82
  15. 0.2
  16. 101
  17. 5
  18. 300
  19. 235
  20. 320
  21. 510
  22. 5
  23. 100
  24. 10
  25. bigger
  26. 0.2
  27. 32
  28. 76
  29. 65
  30. 10
  31. 168
  32. 110
  33. 165
  34. 0.1
  35. 1
  36. 0.25
  37. 972
  38. 110
  39. 240
  40. 50

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