A carrier wave of peak voltage 12 V is used to transmit a message signal. What should be the peak voltage of modulating signal in order to have a modulation index of 75%?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 9 V
Modulation Index = $\frac{V_m}{V_c}$
$\frac{75}{100}=\frac{V_m}{12}$
$V_m$ = 9 V
Option (3) is correct.