← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 423 · 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 50 Ω, 100 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  2. 2.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 Adding another resistor in series makes the total resistance … (a) zero (b) stay the same (c) smaller (d) bigger
  4. 4.🧮 A 7 V battery is joined to 2 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  6. 6.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 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)?
  8. 8.🧮 A 150 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)?
  9. 9.🧮 Resistors of 68 Ω, 68 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Resistors of 47 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  11. 11.🧮 Resistors of 22 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 Two resistors in parallel give a total that is … (a) more than either one (b) always zero (c) less than either one (d) their sum
  14. 14.🧮 Five equal 125 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  16. 16.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 A 33 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)?
  18. 18.🧮 Resistors of 33 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  19. 19.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  20. 20.🧮 Resistors of 10 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 10 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 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)?
  24. 24.🧮 Resistors of 330 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 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)?
  26. 26.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Resistors of 100 Ω, 330 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  28. 28.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  29. 29.🧮 Resistors of 10 Ω, 470 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 Resistors of 330 Ω and 68 Ω are joined in series. 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.🧮 Resistors of 50 Ω, 50 Ω, 220 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  33. 33.🧮 Resistors of 20 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 A 1.8 V battery is joined to 6 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  35. 35.🧮 Resistors of 20 Ω, 47 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 A 33 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)?
  37. 37.🧮 Resistors of 220 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 An 8 V battery is joined to 12 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 Resistors of 20 Ω, 470 Ω, 150 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  40. 40.🧮 A 10 V battery is joined to 10 Ω and 10 Ω resistors in series. What current flows (in amperes)? =

Answer key

  1. 197
  2. 165
  3. bigger
  4. 1
  5. 10
  6. 10
  7. 38
  8. 260
  9. 186
  10. 267
  11. 172
  12. 235
  13. less than either one
  14. 25
  15. 50
  16. 20
  17. 533
  18. 80
  19. 5
  20. 340
  21. 110
  22. 20
  23. 118
  24. 340
  25. 568
  26. 50
  27. 440
  28. 10
  29. 490
  30. 398
  31. 100
  32. 470
  33. 170
  34. 0.1
  35. 537
  36. 133
  37. 550
  38. 0.5
  39. 673
  40. 0.5

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