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The structure of a loud speaker is given.

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The structure of a loud speaker is given.

a. What A and B represent?

b. Explain the working of this device?

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a. 

A – Diaphragm

B – Soft iron core

b. A voice coil which is kept in a magnetic field deflects, when current reaches on it. Sound is produced when the dia-phragm which is connected to the coil vibrated.

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