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