← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 290 · 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, 220 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) bigger (c) smaller (d) zero
  3. 3.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 A 33 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)?
  5. 5.🧮 A 5.5 V battery is joined to 5 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  6. 6.🧮 A 50 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)?
  7. 7.🧮 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
  8. 8.🧮 A 470 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)?
  9. 9.🧮 A 6 V battery is joined to 2 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  10. 10.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 A 4 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  12. 12.🧮 Four equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Resistors of 330 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 A 2.6 V battery is joined to 10 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 A 470 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.🧮 A 2 V battery is joined to 4 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  18. 18.🧮 A 6 V battery is joined to 3 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  19. 19.🧮 A 220 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)?
  20. 20.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 A 22 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)?
  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.🧮 A 68 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)?
  24. 24.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  25. 25.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 470 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 A 2 V battery is joined to 5 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  29. 29.🧮 A 100 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)?
  30. 30.🧮 A 22 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)?
  31. 31.🧮 Two equal 200 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 A 33 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)?
  34. 34.🧮 A 0.8 V battery is joined to 3 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  35. 35.🧮 Resistors of 330 Ω, 68 Ω, 68 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 Resistors of 330 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  37. 37.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 A 1.2 V battery is joined to 2 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 A 3 V battery is joined to 3 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  40. 40.🧮 A 1.3 V battery is joined to 8 Ω and 5 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. 250
  2. bigger
  3. 10
  4. 38
  5. 0.5
  6. 55
  7. less than either one
  8. 480
  9. 1
  10. 235
  11. 0.5
  12. 50
  13. 480
  14. 500
  15. 0.2
  16. 490
  17. 0.25
  18. 1
  19. 245
  20. 50
  21. 257
  22. 230
  23. 568
  24. 20
  25. 10
  26. 110
  27. 940
  28. 0.25
  29. 105
  30. 132
  31. 100
  32. 5
  33. 43
  34. 0.1
  35. 476
  36. 377
  37. 5
  38. 0.2
  39. 0.2
  40. 0.1

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