← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 436 · 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 equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  2. 2.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 Two resistors in parallel give a total that is … (a) less than either one (b) more than either one (c) their sum (d) always zero
  6. 6.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 A 150 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)?
  9. 9.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 A 68 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)?
  11. 11.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 A 1.4 V battery is joined to 4 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  14. 14.🧮 Resistors of 10 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 A 7 V battery is joined to 4 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 A 16 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 A 20 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)?
  20. 20.🧮 Resistors of 47 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 Adding another resistor in series makes the total resistance … (a) zero (b) bigger (c) stay the same (d) smaller
  22. 22.🧮 A 68 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)?
  23. 23.🧮 Resistors of 330 Ω, 33 Ω and 10 Ω are joined in series. 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.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 Resistors of 330 Ω, 220 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 A 1.7 V battery is joined to 12 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 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)?
  32. 32.🧮 A 6 V battery is joined to 2 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 A 220 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)?
  35. 35.🧮 Resistors of 10 Ω, 50 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 A 2.4 V battery is joined to 2 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 A 10 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)?
  38. 38.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 A 4 V battery is joined to 6 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 A 150 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)?

Answer key

  1. 110
  2. 20
  3. 25
  4. 5
  5. less than either one
  6. 50
  7. 20
  8. 385
  9. 50
  10. 168
  11. 10
  12. 5
  13. 0.2
  14. 110
  15. 1
  16. 500
  17. 10
  18. 1
  19. 70
  20. 97
  21. bigger
  22. 118
  23. 373
  24. 43
  25. 50
  26. 10
  27. 100
  28. 600
  29. 25
  30. 0.1
  31. 35
  32. 1
  33. 20
  34. 330
  35. 390
  36. 0.2
  37. 60
  38. 5
  39. 0.5
  40. 315

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