← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 210 · 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) smaller (b) bigger (c) stay the same (d) zero
  2. 2.🧮 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)?
  3. 3.🧮 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
  4. 4.🧮 A 5 V battery is joined to 8 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 A 22 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)?
  6. 6.🧮 Resistors of 330 Ω, 10 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  7. 7.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 An 8 V battery is joined to 2 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  9. 9.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 A 7 V battery is joined to 12 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 A 3.75 V battery is joined to 3 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  12. 12.🧮 Resistors of 220 Ω, 100 Ω, 470 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 A 15 V battery is joined to 10 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  14. 14.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 A 220 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)?
  16. 16.🧮 Resistors of 100 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 A 150 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)?
  19. 19.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 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)?
  21. 21.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 330 Ω, 68 Ω, 47 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 A 50 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)?
  24. 24.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 Resistors of 330 Ω, 47 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 A 14 V battery is joined to 12 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  28. 28.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  29. 29.🧮 A 0.6 V battery is joined to 3 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  30. 30.🧮 Resistors of 330 Ω, 150 Ω, 22 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  31. 31.🧮 Resistors of 150 Ω, 150 Ω, 470 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 Resistors of 33 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 Resistors of 47 Ω, 10 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 A 1.5 V battery is joined to 12 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 Resistors of 330 Ω, 10 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 A 2.4 V battery is joined to 2 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 A 0.9 V battery is joined to 4 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 A 3.2 V battery is joined to 10 Ω and 6 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. bigger
  2. 40
  3. less than either one
  4. 0.5
  5. 187
  6. 373
  7. 5
  8. 1
  9. 5
  10. 0.5
  11. 0.25
  12. 837
  13. 1
  14. 20
  15. 225
  16. 200
  17. 5
  18. 170
  19. 5
  20. 143
  21. 20
  22. 915
  23. 55
  24. 165
  25. 427
  26. 10
  27. 1
  28. 25
  29. 0.1
  30. 524
  31. 792
  32. 55
  33. 10
  34. 25
  35. 79
  36. 0.1
  37. 350
  38. 0.2
  39. 0.1
  40. 0.2

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