In a moving coil microphone electric signals are generated___.

due to sound waves falling on it

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due to internal electric field in which the voice coil is placed

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due to external electric field in which the voice coil is placed

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due to external electromagnetic waves

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Solution

The correct option is A
due to sound waves falling on it

In a moving coil microphone, electric signals are generated due to signals corresponding to these sound waves . In this microphone voice coil is placed in a magnetic field, the diaphgram which is connected to voice coil vibrates due to sound waves falling on it.

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The phenomenon of electromagnetic induction is

(a) the process of charging a body

(b) the process of generating magnetic field due to a current passing through a coil

(d) the process of rotating a coil of an electric motor

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d

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E

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