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.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a slide switch (c) a tilt switch (d) a toggle switch
- 2.🔘 When a switch is ON, the circuit is … (a) open (b) cut (c) broken (d) closed
- 3.What does a tilt switch do? (a) closes when tipped over (b) springs back when let go (c) works only while pressed (d) closes near a magnet
- 4.What does a reed switch do? (a) stays where you flip it (b) works only while pressed (c) flips up or down (d) closes near a magnet
- 5.🔘 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) No (b) Yes
- 6.🔘 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
- 7.What does a slide switch do? (a) closes when tipped over (b) stays where you flip it (c) closes near a magnet (d) slides side to side
- 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) Yes (b) No
- 9.🔘 Which kind of switch flips up or down? (a) a tilt switch (b) a slide switch (c) a toggle switch (d) a reed switch
- 10.🔘 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
- 11.🔘 Which kind of switch stays where you flip it? (a) a push button (b) a toggle switch (c) a reed switch (d) a tilt switch
- 12.🔘 What does a switch do in a circuit? (a) stores current (b) opens or closes the loop (c) makes electricity (d) changes the voltage
- 13.🔘 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
- 14.🔘 Which kind of switch closes near a magnet? (a) a reed switch (b) a slide switch (c) a push button (d) a tilt switch
- 15.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) never (b) only when both are OFF (c) when either is ON (d) only when both are ON
- 16.True or false: a toggle switch stays where you flip it. (a) False (b) True
- 17.🔘 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 OFF. Does the bulb glow? (a) Yes (b) No
- 18.True or false: a toggle switch flips up or down. (a) False (b) True
- 19.True or false: a slide switch works only while pressed. (a) False (b) True
- 20.What does a push button do? (a) stays where you flip it (b) closes near a magnet (c) works only while pressed (d) closes when tipped over
- 21.🔘 Which kind of switch slides side to side? (a) a reed switch (b) a toggle switch (c) a slide switch (d) a push button
- 22.What does a toggle switch do? (a) springs back when let go (b) slides side to side (c) closes when tipped over (d) flips up or down
- 23.🔘 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) No (b) Yes
- 24.🔘 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
- 25.True or false: a push button springs back when let go. (a) True (b) False
- 26.What does a push button do? (a) stays where you flip it (b) flips up or down (c) springs back when let go (d) closes when tipped over
- 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) Yes (b) No
- 28.🔘 Which kind of switch works only while pressed? (a) a push button (b) a slide switch (c) a tilt switch (d) a reed switch
- 29.🔘 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?
- 30.🔘 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 ON. Does the bulb glow? (a) Yes (b) No
- 31.🔘 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?
- 32.🔘 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
- 33.🔘 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?
- 34.True or false: a push button works only while pressed. (a) True (b) False
- 35.🔘 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
- 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 ON, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
- 37.🔘 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
- 38.🔘 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) No (b) Yes
- 39.🔘 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 ON. Does the bulb glow? (a) No (b) Yes
- 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 ON, B is ON, C is OFF and D is OFF. Does the bulb glow? (a) No (b) Yes
Answer key
- a tilt switch
- closed
- closes when tipped over
- closes near a magnet
- Yes
- Yes
- slides side to side
- No
- a toggle switch
- No
- a toggle switch
- opens or closes the loop
- No
- a reed switch
- when either is ON
- True
- Yes
- True
- False
- works only while pressed
- a slide switch
- flips up or down
- Yes
- No
- True
- springs back when let go
- No
- a push button
- 1
- Yes
- 3
- Yes
- 1
- True
- No
- Yes
- Yes
- No
- Yes
- Yes
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