← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 171 · 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) smaller (c) zero (d) stay the same
  2. 2.🧮 Resistors of 33 Ω, 22 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  3. 3.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 A 2 V battery is joined to 6 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  5. 5.🧮 A 50 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)?
  6. 6.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  7. 7.🧮 A 1.5 V battery is joined to 2 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  8. 8.🧮 Resistors of 22 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  9. 9.🧮 A 10 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)?
  10. 10.🧮 Two resistors in parallel give a total that is … (a) more than either one (b) their sum (c) always zero (d) less than either one
  11. 11.🧮 Two equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  12. 12.🧮 A 4.5 V battery is joined to 6 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  13. 13.🧮 A 470 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)?
  14. 14.🧮 Resistors of 47 Ω and 68 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 A 0.5 V battery is joined to 3 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  16. 16.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 Three equal 15 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  18. 18.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  19. 19.🧮 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)?
  20. 20.🧮 Resistors of 33 Ω, 10 Ω, 22 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  21. 21.🧮 A 10 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)?
  22. 22.🧮 A 0.7 V battery is joined to 4 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  23. 23.🧮 Resistors of 100 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  24. 24.🧮 A 4.5 V battery is joined to 4 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  25. 25.🧮 Resistors of 10 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  26. 26.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  27. 27.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 A 6 V battery is joined to 10 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  29. 29.🧮 A 220 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)?
  30. 30.🧮 A 68 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)?
  31. 31.🧮 Four equal 20 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  32. 32.🧮 A 1.4 V battery is joined to 5 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  33. 33.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 A 100 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)?
  35. 35.🧮 Resistors of 68 Ω and 100 Ω are joined in series. What is the total resistance (in ohms)?
  36. 36.🧮 A 3 V battery is joined to 3 Ω and 3 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 A 3.5 V battery is joined to 6 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  38. 38.🧮 A 2.4 V battery is joined to 10 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  39. 39.🧮 Four equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 A 47 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)?

Answer key

  1. bigger
  2. 525
  3. 110
  4. 0.2
  5. 150
  6. 20
  7. 0.25
  8. 42
  9. 60
  10. less than either one
  11. 10
  12. 0.5
  13. 570
  14. 115
  15. 0.1
  16. 20
  17. 5
  18. 10
  19. 200
  20. 98
  21. 30
  22. 0.1
  23. 120
  24. 0.5
  25. 110
  26. 5
  27. 100
  28. 0.5
  29. 455
  30. 168
  31. 5
  32. 0.2
  33. 10
  34. 600
  35. 168
  36. 0.5
  37. 0.25
  38. 0.2
  39. 10
  40. 57

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