← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 72 · 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) stay the same (b) bigger (c) zero (d) smaller
  2. 2.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 Two resistors in parallel give a total that is … (a) less than either one (b) always zero (c) their sum (d) more than either one
  4. 4.🧮 An 8 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 A 47 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)?
  6. 6.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 A 0.5 V battery is joined to 2 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 A 12 V battery is joined to 6 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  9. 9.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 A 100 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)?
  11. 11.🧮 A 10 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)?
  12. 12.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Resistors of 68 Ω, 150 Ω, 68 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 A 47 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)?
  16. 16.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 68 Ω, 22 Ω, 470 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 A 4 V battery is joined to 12 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 Resistors of 470 Ω, 47 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Resistors of 150 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 150 Ω, 470 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 Resistors of 33 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 A 2.2 V battery is joined to 10 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 Resistors of 10 Ω, 470 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 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)?
  29. 29.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 A 1.3 V battery is joined to 10 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 A 2.25 V battery is joined to 3 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 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)?
  34. 34.🧮 A 2 V battery is joined to 2 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  35. 35.🧮 A 10 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)?
  36. 36.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 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)?
  38. 38.🧮 Resistors of 68 Ω, 33 Ω, 47 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 Resistors of 22 Ω, 20 Ω, 100 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  40. 40.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. bigger
  2. 100
  3. less than either one
  4. 0.5
  5. 72
  6. 500
  7. 0.1
  8. 1
  9. 165
  10. 120
  11. 15
  12. 25
  13. 386
  14. 20
  15. 282
  16. 110
  17. 582
  18. 0.25
  19. 847
  20. 100
  21. 183
  22. 640
  23. 25
  24. 43
  25. 0.1
  26. 810
  27. 20
  28. 40
  29. 10
  30. 0.1
  31. 235
  32. 0.25
  33. 635
  34. 0.2
  35. 245
  36. 50
  37. 35
  38. 368
  39. 210
  40. 5

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