← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 89 · 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 20 Ω, 100 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) smaller (c) bigger (d) zero
  3. 3.🧮 A 6 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  4. 4.🧮 Resistors of 20 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  5. 5.🧮 Resistors of 47 Ω, 100 Ω, 22 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 Resistors of 330 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  7. 7.🧮 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)?
  8. 8.🧮 A 1.6 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  9. 9.🧮 A 470 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)?
  10. 10.🧮 A 4.4 V battery is joined to 12 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  11. 11.🧮 A 2.25 V battery is joined to 4 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  12. 12.🧮 A 1.3 V battery is joined to 8 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  13. 13.🧮 Resistors of 20 Ω, 470 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Resistors of 220 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 A 6.5 V battery is joined to 10 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  17. 17.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 Resistors of 150 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  19. 19.🧮 Resistors of 220 Ω, 220 Ω, 20 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 A 220 Ω resistor is joined in series with two equal 20 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  23. 23.🧮 Resistors of 47 Ω, 20 Ω, 20 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 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
  26. 26.🧮 Resistors of 22 Ω, 68 Ω, 100 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 A 50 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)?
  29. 29.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  31. 31.🧮 A 2 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  32. 32.🧮 A 3.25 V battery is joined to 3 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 An 11 V battery is joined to 6 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  34. 34.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 Resistors of 68 Ω, 220 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 A 4.5 V battery is joined to 4 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 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)?
  39. 39.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 A 3.2 V battery is joined to 12 Ω and 4 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. 130
  2. bigger
  3. 1
  4. 70
  5. 202
  6. 550
  7. 70
  8. 0.2
  9. 705
  10. 0.2
  11. 0.25
  12. 0.1
  13. 537
  14. 10
  15. 690
  16. 0.5
  17. 50
  18. 370
  19. 482
  20. 25
  21. 10
  22. 230
  23. 97
  24. 5
  25. less than either one
  26. 410
  27. 165
  28. 150
  29. 50
  30. 20
  31. 0.25
  32. 0.25
  33. 1
  34. 50
  35. 508
  36. 0.5
  37. 5
  38. 510
  39. 5
  40. 0.2

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