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Q.

A hammer, a gong, and a soft iron strip are all parts of


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a

An electromagnet

b

An electric bell

c

An electric fuse

d

Electric circuit 

answer is B.

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Detailed Solution

A hammer, a gong, and a soft iron strip are all parts of an electric bell.
An electric bell's components are an iron strip, an electromagnet, and a hammer. The circuit receives current when the switch is turned on, causing the electromagnet to pull the iron strip. This causes the bell to sound and the hammer attached to the iron piece to strike the gong.
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