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Electronics Worksheet: Switches in a Circuit

Electronics lesson 5: Switches in a circuit · Set 910 · 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 ON, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
  2. 2.🔘 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?
  3. 3.True or false: a reed switch flips up or down. (a) True (b) False
  4. 4.🔘 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) No (b) Yes
  5. 5.What does a reed switch do? (a) closes near a magnet (b) stays where you flip it (c) flips up or down (d) closes when tipped over
  6. 6.🔘 Which kind of switch stays where you flip it? (a) a reed switch (b) a toggle switch (c) a tilt switch (d) a push button
  7. 7.🔘 Two switches are in series. When does the bulb glow? (a) when both are OFF (b) when both are ON (c) when either is ON (d) never
  8. 8.🔘 Which kind of switch closes when tipped over? (a) a reed switch (b) a slide switch (c) a tilt switch (d) a toggle switch
  9. 9.True or false: a toggle switch springs back when let go. (a) True (b) False
  10. 10.🔘 When a switch is ON, the circuit is … (a) open (b) closed (c) broken (d) cut
  11. 11.🔘 A bulb and a cell are joined through 4 switches on 4 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?
  12. 12.True or false: a toggle switch works only while pressed. (a) True (b) False
  13. 13.What does a tilt switch do? (a) stays where you flip it (b) flips up or down (c) closes when tipped over (d) works only while pressed
  14. 14.🔘 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
  15. 15.🔘 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?
  16. 16.🔘 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?
  17. 17.🔘 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
  18. 18.🔘 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
  19. 19.🔘 What does a switch do in a circuit? (a) changes the voltage (b) stores current (c) opens or closes the loop (d) makes electricity
  20. 20.🔘 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
  21. 21.🔘 Which kind of switch flips up or down? (a) a push button (b) a slide switch (c) a tilt switch (d) a toggle switch
  22. 22.True or false: a toggle switch flips up or down. (a) False (b) True
  23. 23.True or false: a slide switch stays where you flip it. (a) False (b) True
  24. 24.🔘 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 ON and C is ON. Does the bulb glow? (a) Yes (b) No
  25. 25.What does a slide switch do? (a) slides side to side (b) springs back when let go (c) stays where you flip it (d) closes when tipped over
  26. 26.🔘 Which kind of switch closes near a magnet? (a) a tilt switch (b) a reed switch (c) a slide switch (d) a toggle switch
  27. 27.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) never (b) when either is ON (c) only when both are ON (d) only when both are OFF
  28. 28.True or false: a toggle switch stays where you flip it. (a) False (b) True
  29. 29.🔘 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 ON and D is ON. Does the bulb glow? (a) Yes (b) No
  30. 30.What does a push button do? (a) springs back when let go (b) flips up or down (c) slides side to side (d) stays where you flip it
  31. 31.🔘 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 OFF. Does the bulb glow? (a) No (b) Yes
  32. 32.🔘 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) No (b) Yes
  33. 33.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is ON, B is ON, C is OFF and D is OFF. Does the bulb glow? (a) Yes (b) No
  34. 34.🔘 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) Yes (b) No
  35. 35.🔘 A bulb and a cell are joined through 6 switches on 6 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?
  36. 36.🔘 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 ON. Does the bulb glow? (a) No (b) Yes
  37. 37.True or false: a push button works only while pressed. (a) False (b) True
  38. 38.🔘 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 OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
  39. 39.🔘 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 OFF. Does the bulb glow? (a) Yes (b) No
  40. 40.🔘 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 ON and D is OFF. Does the bulb glow? (a) No (b) Yes

Answer key

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

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