← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 8 · 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) bigger (b) stay the same (c) smaller (d) zero
  2. 2.🧮 Two equal 20 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) their sum (c) more than either one (d) always zero
  4. 4.🧮 A 2 V battery is joined to 6 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 A 14 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  6. 6.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 A 3.5 V battery is joined to 4 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  10. 10.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 Resistors of 50 Ω, 330 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 Resistors of 33 Ω, 20 Ω, 47 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 A 68 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)?
  15. 15.🧮 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)?
  16. 16.🧮 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)?
  17. 17.🧮 Three equal 75 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 1000 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  19. 19.🧮 Resistors of 220 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 A 22 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)?
  21. 21.🧮 A 1.6 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  22. 22.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 A 5 V battery is joined to 4 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 A 20 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)?
  25. 25.🧮 Resistors of 68 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 Resistors of 50 Ω, 47 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 20 Ω, 68 Ω, 22 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Three equal 15 Ω resistors are joined in parallel. 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.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  31. 31.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 A 5 V battery is joined to 6 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 A 150 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)?
  34. 34.🧮 Resistors of 220 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 A 100 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)?
  36. 36.🧮 A 4.5 V battery is joined to 5 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 A 7 V battery is joined to 10 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 A 6 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 Resistors of 470 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. bigger
  2. 10
  3. less than either one
  4. 0.25
  5. 1
  6. 5
  7. 0.25
  8. 235
  9. 20
  10. 100
  11. 500
  12. 402
  13. 110
  14. 233
  15. 522
  16. 120
  17. 25
  18. 650
  19. 242
  20. 42
  21. 0.1
  22. 5
  23. 0.5
  24. 130
  25. 168
  26. 107
  27. 157
  28. 5
  29. 25
  30. 10
  31. 100
  32. 0.5
  33. 175
  34. 230
  35. 125
  36. 0.5
  37. 50
  38. 0.5
  39. 1
  40. 517

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