A break in the filament of an electric bulb means________.

the switch is off

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the switch is on

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the circuit is complete

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the circuit is incomplete

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Solution

The correct option is D
the circuit is incomplete

A bulb with broken filament is called a fused bulb and it does not glow. If the filament of a bulb is broken, the circuit is incomplete. Thus, it restricts the flow of current.

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Similar questions

A device that breaks or completes a circuit is known as an electric switch.

Question 2

Choose the incorrect statement.

(a) A switch is the source of electric current in a circuit.

(b) A switch help to complete or break the circuit.

(d) When the switch is open there is an air gap between its terminals.

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