← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 124 · 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.🧮 A 22 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)?
  2. 2.🧮 An 8 V battery is joined to 12 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  3. 3.🧮 Five equal 250 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Resistors of 68 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  5. 5.🧮 Two resistors in parallel give a total that is … (a) more than either one (b) less than either one (c) always zero (d) their sum
  6. 6.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) smaller (c) zero (d) bigger
  7. 7.🧮 Resistors of 20 Ω, 220 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  8. 8.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 A 100 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)?
  10. 10.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 A 33 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)?
  12. 12.🧮 Resistors of 47 Ω, 470 Ω, 470 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  14. 14.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  15. 15.🧮 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)?
  16. 16.🧮 Resistors of 470 Ω, 100 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  17. 17.🧮 Resistors of 20 Ω, 20 Ω, 68 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  18. 18.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 Resistors of 50 Ω, 330 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 Resistors of 220 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 Resistors of 68 Ω, 220 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  22. 22.🧮 A 16 V battery is joined to 6 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  23. 23.🧮 Resistors of 470 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 Resistors of 68 Ω, 22 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 Resistors of 47 Ω, 330 Ω, 33 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 A 3.2 V battery is joined to 4 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  27. 27.🧮 A 0.7 V battery is joined to 4 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  28. 28.🧮 A 330 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)?
  29. 29.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  30. 30.🧮 A 100 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)?
  31. 31.🧮 An 8 V battery is joined to 6 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  32. 32.🧮 A 1.4 V battery is joined to 10 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 Resistors of 100 Ω, 100 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  34. 34.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  35. 35.🧮 Five equal 25 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  38. 38.🧮 A 22 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)?
  39. 39.🧮 A 50 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)?
  40. 40.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. 47
  2. 0.5
  3. 50
  4. 538
  5. less than either one
  6. bigger
  7. 273
  8. 100
  9. 200
  10. 5
  11. 83
  12. 1007
  13. 25
  14. 110
  15. 43
  16. 720
  17. 176
  18. 100
  19. 402
  20. 267
  21. 388
  22. 1
  23. 690
  24. 100
  25. 430
  26. 0.2
  27. 0.1
  28. 380
  29. 165
  30. 335
  31. 1
  32. 0.1
  33. 210
  34. 235
  35. 5
  36. 100
  37. 50
  38. 122
  39. 60
  40. 25

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