Electronics Worksheet: Switches in a Circuit
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.🔘 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?
- 2.🔘 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
- 3.🔘 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 ON. Does the bulb glow? (a) Yes (b) No
- 4.True or false: a tilt switch slides side to side. (a) True (b) False
- 5.What does a tilt switch do? (a) closes near a magnet (b) works only while pressed (c) closes when tipped over (d) stays where you flip it
- 6.🔘 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?
- 7.True or false: a push button works only while pressed. (a) True (b) False
- 8.True or false: a tilt switch stays where you flip it. (a) True (b) False
- 9.True or false: a slide switch slides side to side. (a) True (b) False
- 10.🔘 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) Yes (b) No
- 11.What does a slide switch do? (a) stays where you flip it (b) works only while pressed (c) closes near a magnet (d) slides side to side
- 12.True or false: a push button springs back when let go. (a) True (b) False
- 13.🔘 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) No (b) Yes
- 14.🔘 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
- 15.🔘 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) Yes (b) No
- 16.🔘 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
- 17.True or false: a toggle switch flips up or down. (a) True (b) False
- 18.🔘 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 OFF. Does the bulb glow? (a) No (b) Yes
- 19.🔘 Which kind of switch slides side to side? (a) a push button (b) a toggle switch (c) a tilt switch (d) a slide switch
- 20.🔘 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) Yes (b) No
- 21.🔘 Which kind of switch stays where you flip it? (a) a toggle switch (b) a reed switch (c) a slide switch (d) a push button
- 22.True or false: a toggle switch works only while pressed. (a) False (b) True
- 23.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a toggle switch (c) a tilt switch (d) a push button
- 24.🔘 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
- 25.🔘 Which kind of switch closes when tipped over? (a) a toggle switch (b) a reed switch (c) a tilt switch (d) a slide switch
- 26.What does a push button do? (a) slides side to side (b) springs back when let go (c) closes when tipped over (d) stays where you flip it
- 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.What does a push button do? (a) works only while pressed (b) closes when tipped over (c) flips up or down (d) stays where you flip it
- 29.🔘 Two switches are in series. When does the bulb glow? (a) when both are ON (b) when either is ON (c) when both are OFF (d) never
- 30.True or false: a slide switch closes when tipped over. (a) True (b) False
- 31.🔘 Which kind of switch works only while pressed? (a) a reed switch (b) a push button (c) a tilt switch (d) a toggle switch
- 32.🔘 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
- 33.🔘 Which kind of switch closes near a magnet? (a) a push button (b) a toggle switch (c) a reed switch (d) a slide switch
- 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 OFF. Does the bulb glow? (a) Yes (b) No
- 35.True or false: a reed switch stays where you flip it. (a) False (b) True
- 36.True or false: a push button stays where you flip it. (a) False (b) True
- 37.What does a toggle switch do? (a) works only while pressed (b) springs back when let go (c) closes when tipped over (d) flips up or down
- 38.What does a reed switch do? (a) stays where you flip it (b) flips up or down (c) slides side to side (d) closes near a magnet
- 39.🔘 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) No (b) Yes
- 40.🔘 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
Answer key
- 3
- Yes
- Yes
- False
- closes when tipped over
- 1
- True
- False
- True
- No
- slides side to side
- True
- No
- No
- No
- Yes
- True
- Yes
- a slide switch
- Yes
- a toggle switch
- False
- a toggle switch
- Yes
- a tilt switch
- springs back when let go
- No
- works only while pressed
- when both are ON
- False
- a push button
- No
- a reed switch
- No
- False
- False
- flips up or down
- closes near a magnet
- Yes
- Yes
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