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.What does a reed switch do? (a) closes near a magnet (b) flips up or down (c) slides side to side (d) stays where you flip it
- 2.True or false: a slide switch flips up or down. (a) False (b) True
- 3.🔘 Two switches are in series. When does the bulb glow? (a) when both are OFF (b) when both are ON (c) never (d) when either is ON
- 4.True or false: a slide switch slides side to side. (a) False (b) True
- 5.🔘 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?
- 6.🔘 What does a switch do in a circuit? (a) opens or closes the loop (b) changes the voltage (c) stores current (d) makes electricity
- 7.🔘 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) No (b) Yes
- 8.🔘 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 OFF, C is OFF and D is OFF. Does the bulb glow? (a) Yes (b) No
- 9.🔘 Which kind of switch closes when tipped over? (a) a tilt switch (b) a toggle switch (c) a slide switch (d) a push button
- 10.🔘 When a switch is ON, the circuit is … (a) cut (b) broken (c) closed (d) open
- 11.What does a slide switch do? (a) closes when tipped over (b) flips up or down (c) works only while pressed (d) slides side to side
- 12.True or false: a push button works only while pressed. (a) True (b) False
- 13.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) never (b) only when both are ON (c) only when both are OFF (d) when either is ON
- 14.True or false: a toggle switch flips up or down. (a) False (b) True
- 15.What does a tilt switch do? (a) stays where you flip it (b) closes near a magnet (c) closes when tipped over (d) springs back when let go
- 16.What does a toggle switch do? (a) slides side to side (b) works only while pressed (c) closes when tipped over (d) flips up or down
- 17.🔘 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
- 18.🔘 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
- 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 OFF. Does the bulb glow? (a) No (b) Yes
- 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 OFF, B is ON and C is ON. Does the bulb glow? (a) No (b) Yes
- 21.🔘 Which kind of switch slides side to side? (a) a toggle switch (b) a slide switch (c) a reed switch (d) a tilt switch
- 22.🔘 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?
- 23.What does a push button do? (a) stays where you flip it (b) closes near a magnet (c) springs back when let go (d) flips up or down
- 24.🔘 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?
- 25.True or false: a toggle switch stays where you flip it. (a) True (b) False
- 26.🔘 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
- 27.🔘 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?
- 28.True or false: a reed switch closes near a magnet. (a) False (b) True
- 29.🔘 Which kind of switch stays where you flip it? (a) a slide switch (b) a reed switch (c) a toggle switch (d) a tilt switch
- 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 OFF, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
- 31.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a reed switch (c) a tilt switch (d) a toggle switch
- 32.What does a push button do? (a) closes when tipped over (b) works only while pressed (c) slides side to side (d) flips up or down
- 33.True or false: a push button flips up or down. (a) False (b) True
- 34.🔘 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
- 35.🔘 Which kind of switch works only while pressed? (a) a push button (b) a toggle switch (c) a tilt switch (d) a reed switch
- 36.🔘 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
- 37.🔘 Which kind of switch springs back when let go? (a) a slide switch (b) a toggle switch (c) a tilt switch (d) a push button
- 38.🔘 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 OFF. Does the bulb glow? (a) No (b) Yes
- 39.🔘 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 OFF and D is OFF. Does the bulb glow? (a) Yes (b) No
- 40.What does a toggle switch do? (a) stays where you flip it (b) works only while pressed (c) springs back when let go (d) closes near a magnet
Answer key
- closes near a magnet
- False
- when both are ON
- True
- 4
- opens or closes the loop
- No
- No
- a tilt switch
- closed
- slides side to side
- True
- when either is ON
- True
- closes when tipped over
- flips up or down
- No
- No
- No
- Yes
- a slide switch
- 1
- springs back when let go
- 1
- True
- Yes
- 1
- True
- a toggle switch
- No
- a toggle switch
- works only while pressed
- False
- Yes
- a push button
- Yes
- a push button
- No
- No
- stays where you flip it
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