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