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Electronics Worksheet: Switches in a Circuit

Electronics lesson 5: Switches in a circuit · Set 276 · 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.🔘 A bulb and a cell are joined through 5 switches on 5 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?
  2. 2.🔘 Which kind of switch stays where you flip it? (a) a toggle switch (b) a push button (c) a tilt switch (d) a reed switch
  3. 3.🔘 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 OFF and C is ON. Does the bulb glow? (a) Yes (b) No
  4. 4.True or false: a push button springs back when let go. (a) True (b) False
  5. 5.🔘 When a switch is ON, the circuit is … (a) closed (b) broken (c) cut (d) open
  6. 6.🔘 What does a switch do in a circuit? (a) makes electricity (b) changes the voltage (c) stores current (d) opens or closes the loop
  7. 7.What does a reed switch do? (a) closes when tipped over (b) slides side to side (c) closes near a magnet (d) works only while pressed
  8. 8.🔘 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) No (b) Yes
  9. 9.What does a push button do? (a) closes near a magnet (b) closes when tipped over (c) springs back when let go (d) flips up or down
  10. 10.🔘 A bulb and a cell are joined through 2 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
  11. 11.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is OFF, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
  12. 12.True or false: a reed switch works only while pressed. (a) True (b) False
  13. 13.What does a tilt switch do? (a) closes near a magnet (b) closes when tipped over (c) flips up or down (d) springs back when let go
  14. 14.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are ON (b) never (c) when either is ON (d) only when both are OFF
  15. 15.True or false: a toggle switch flips up or down. (a) False (b) True
  16. 16.🔘 Which kind of switch flips up or down? (a) a toggle switch (b) a slide switch (c) a reed switch (d) a tilt switch
  17. 17.🔘 A bulb and a cell are joined through 2 switches on 2 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?
  18. 18.🔘 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 ON. Does the bulb glow? (a) No (b) Yes
  19. 19.🔘 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 ON, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
  20. 20.What does a toggle switch do? (a) stays where you flip it (b) works only while pressed (c) slides side to side (d) springs back when let go
  21. 21.What does a slide switch do? (a) springs back when let go (b) slides side to side (c) closes near a magnet (d) stays where you flip it
  22. 22.True or false: a slide switch flips up or down. (a) True (b) False
  23. 23.True or false: a reed switch closes near a magnet. (a) True (b) False
  24. 24.🔘 Which kind of switch slides side to side? (a) a reed switch (b) a slide switch (c) a tilt switch (d) a toggle switch
  25. 25.What does a toggle switch do? (a) closes near a magnet (b) springs back when let go (c) flips up or down (d) closes when tipped over
  26. 26.🔘 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) Yes (b) No
  27. 27.🔘 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 OFF. Does the bulb glow? (a) Yes (b) No
  28. 28.🔘 Two switches are in series. When does the bulb glow? (a) never (b) when both are ON (c) when both are OFF (d) when either is ON
  29. 29.True or false: a push button works only while pressed. (a) False (b) True
  30. 30.🔘 Which kind of switch closes near a magnet? (a) a push button (b) a slide switch (c) a reed switch (d) a toggle switch
  31. 31.True or false: a slide switch stays where you flip it. (a) True (b) False
  32. 32.True or false: a toggle switch closes near a magnet. (a) True (b) False
  33. 33.🔘 Which kind of switch closes when tipped over? (a) a tilt switch (b) a reed switch (c) a push button (d) a slide switch
  34. 34.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is ON, B is ON and C is ON. Does the bulb glow? (a) Yes (b) No
  35. 35.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
  36. 36.🔘 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 ON, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
  37. 37.🔘 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?
  38. 38.🔘 Which kind of switch springs back when let go? (a) a tilt switch (b) a toggle switch (c) a slide switch (d) a push button
  39. 39.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is OFF, B is ON, C is OFF and D is ON. Does the bulb glow? (a) Yes (b) No
  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 ON and D is ON. Does the bulb glow? (a) No (b) Yes

Answer key

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

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