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Electronics Worksheet: Switches in a Circuit

Electronics lesson 5: Switches in a circuit · Set 118 · 40 questions
TalentJR

Remember (All for series, any for parallel): Series switches (one path): the bulb glows only if ALL are ON. Parallel switches (side-by-side paths): the bulb glows if ANY one is ON. Mixed: work out each path, then ask if there is at least one complete path.

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  1. 1.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is ON and C is OFF. Does the bulb glow? (a) Yes (b) No
  2. 2.🔘 What does a switch do in a circuit? (a) changes the voltage (b) opens or closes the loop (c) stores current (d) makes electricity
  3. 3.🔘 When a switch is ON, the circuit is … (a) cut (b) broken (c) open (d) closed
  4. 4.🔘 A bulb and a cell are joined through 3 switches on 3 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
  5. 5.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is OFF and B is ON. Does the bulb glow? (a) No (b) Yes
  6. 6.True or false: a push button slides side to side. (a) False (b) True
  7. 7.🔘 Which kind of switch springs back when let go? (a) a tilt switch (b) a push button (c) a slide switch (d) a toggle switch
  8. 8.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
  9. 9.What does a slide switch do? (a) slides side to side (b) stays where you flip it (c) closes when tipped over (d) flips up or down
  10. 10.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is ON, B is ON and C is ON. Does the bulb glow? (a) No (b) Yes
  11. 11.What does a toggle switch do? (a) slides side to side (b) closes when tipped over (c) flips up or down (d) springs back when let go
  12. 12.True or false: a tilt switch closes when tipped over. (a) False (b) True
  13. 13.What does a reed switch do? (a) stays where you flip it (b) closes when tipped over (c) flips up or down (d) closes near a magnet
  14. 14.What does a toggle switch do? (a) stays where you flip it (b) closes when tipped over (c) closes near a magnet (d) works only while pressed
  15. 15.🔘 Which kind of switch works only while pressed? (a) a push button (b) a tilt switch (c) a reed switch (d) a slide switch
  16. 16.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are OFF (b) when either is ON (c) only when both are ON (d) never
  17. 17.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is OFF, B is OFF, C is OFF and D is ON. Does the bulb glow? (a) Yes (b) No
  18. 18.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is ON and B is ON. Does the bulb glow? (a) Yes (b) No
  19. 19.True or false: a toggle switch flips up or down. (a) False (b) True
  20. 20.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is OFF, B is OFF, C is ON and D is OFF. Does the bulb glow? (a) Yes (b) No
  21. 21.True or false: a push button works only while pressed. (a) True (b) False
  22. 22.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is OFF, B is OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
  23. 23.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a tilt switch (c) a toggle switch (d) a reed switch
  24. 24.🔘 Two switches are in series. When does the bulb glow? (a) never (b) when both are OFF (c) when either is ON (d) when both are ON
  25. 25.🔘 Which kind of switch closes near a magnet? (a) a toggle switch (b) a reed switch (c) a push button (d) a slide switch
  26. 26.🔘 Which kind of switch closes when tipped over? (a) a reed switch (b) a tilt switch (c) a push button (d) a toggle switch
  27. 27.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
  28. 28.🔘 A bulb and a cell are joined through 4 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
  29. 29.What does a push button do? (a) closes when tipped over (b) stays where you flip it (c) works only while pressed (d) closes near a magnet
  30. 30.True or false: a toggle switch works only while pressed. (a) False (b) True
  31. 31.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is OFF, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
  32. 32.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is ON, B is ON, C is ON and D is ON. Does the bulb glow? (a) Yes (b) No
  33. 33.True or false: a toggle switch closes near a magnet. (a) False (b) True
  34. 34.True or false: a tilt switch springs back when let go. (a) False (b) True
  35. 35.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is ON, B is ON and C is ON. Does the bulb glow? (a) Yes (b) No
  36. 36.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is OFF. Does the bulb glow? (a) No (b) Yes
  37. 37.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is ON, B is ON and C is OFF. Does the bulb glow? (a) Yes (b) No
  38. 38.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is ON and B is OFF. Does the bulb glow? (a) Yes (b) No
  39. 39.True or false: a reed switch closes near a magnet. (a) False (b) True
  40. 40.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is OFF, B is OFF, C is OFF and D is OFF. Does the bulb glow? (a) Yes (b) No

Answer key

  1. No
  2. opens or closes the loop
  3. closed
  4. 1
  5. Yes
  6. False
  7. a push button
  8. No
  9. slides side to side
  10. Yes
  11. flips up or down
  12. True
  13. closes near a magnet
  14. stays where you flip it
  15. a push button
  16. when either is ON
  17. Yes
  18. Yes
  19. True
  20. Yes
  21. True
  22. No
  23. a toggle switch
  24. when both are ON
  25. a reed switch
  26. a tilt switch
  27. No
  28. 4
  29. works only while pressed
  30. False
  31. Yes
  32. Yes
  33. False
  34. False
  35. Yes
  36. No
  37. Yes
  38. No
  39. True
  40. No

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