← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 26 · 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 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  2. 2.🧮 A 1.2 V battery is joined to 4 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  3. 3.🧮 Resistors of 330 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  4. 4.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 A 330 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.🧮 A 10 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)?
  7. 7.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 A 0.9 V battery is joined to 3 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  10. 10.🧮 Adding another resistor in series makes the total resistance … (a) smaller (b) bigger (c) zero (d) stay the same
  11. 11.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 A 22 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)?
  13. 13.🧮 Resistors of 20 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 A 1.2 V battery is joined to 6 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  15. 15.🧮 Resistors of 20 Ω, 47 Ω, 50 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 A 1.4 V battery is joined to 3 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  17. 17.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 A 1.4 V battery is joined to 12 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  21. 21.🧮 A 220 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)?
  22. 22.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  23. 23.🧮 Resistors of 20 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 A 50 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)?
  25. 25.🧮 A 15 V battery is joined to 12 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 A 1.25 V battery is joined to 3 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  27. 27.🧮 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)?
  28. 28.🧮 Resistors of 10 Ω, 150 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  29. 29.🧮 A 1.4 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  30. 30.🧮 A 6 V battery is joined to 4 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 Resistors of 33 Ω, 47 Ω, 20 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  32. 32.🧮 A 3.5 V battery is joined to 6 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 A 50 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)?
  34. 34.🧮 Resistors of 68 Ω, 10 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 A 330 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)?
  36. 36.🧮 A 1.1 V battery is joined to 6 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 Resistors of 470 Ω, 20 Ω, 150 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 Two resistors in parallel give a total that is … (a) their sum (b) less than either one (c) more than either one (d) always zero
  39. 39.🧮 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)?
  40. 40.🧮 A 0.5 V battery is joined to 3 Ω and 2 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. 100
  2. 0.1
  3. 352
  4. 20
  5. 355
  6. 110
  7. 5
  8. 10
  9. 0.1
  10. bigger
  11. 10
  12. 32
  13. 350
  14. 0.1
  15. 137
  16. 0.2
  17. 110
  18. 235
  19. 500
  20. 0.1
  21. 385
  22. 50
  23. 40
  24. 285
  25. 1
  26. 0.25
  27. 187
  28. 193
  29. 0.1
  30. 1
  31. 133
  32. 0.25
  33. 70
  34. 228
  35. 495
  36. 0.1
  37. 662
  38. less than either one
  39. 35
  40. 0.1

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