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Q.

An audio signal $v_{m} = 20 \sin 2 π (1500 t)$ amplitude modulates a carrier $v_{c} = 80 \sin 2 π (100, 000 t)$ .
The value of percent modulation is __________

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answer is 25.

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Detailed Solution

$m % = \frac{A_{m}}{A_{c}} \times 100 = \frac{20}{80} \times 100 = 25 %$

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