Electronics Worksheet: Switches in a Circuit

Electronics lesson 5: Switches in a circuit · Set 99 · 40 questions

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.

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

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