An audio signal

Question:

An audio signal $v_{m}=20 \sin 2 \pi(1500 \mathrm{t})$ amplitude modulates a carrier

$v_{C}=80 \sin 2 \pi(100,000 t)$

The value of percent modulation is

Solution:

$\%$ modulation $=\frac{\mathrm{Am}}{\mathrm{Ac}} \times 100$

$\%$ modulation $=\frac{20}{80} \times 100$

$\%$ modulation $=25 \%$

Ans 25

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