A carrier wave of peak voltage 15 V is used to transmit a message signal. Find the peak voltage of the modulating signal in order to have a modulation index of 60%.

Explanation

Amplitude of the carrier wave =15 V .
Modulation index `m = 60% = (60)/(100) = 0.60`
Pealk voltage of modulating wave = x .
then `m = x//0.60`
`x = 15 xx 0.60" "[m = 15V]`
`x = 9V`