Question: A message signal of frequency $20 \mathrm{kHz}$ and peak voltage of 20 volt is used to modulate a carrier wave of frequency $1 \mathrm{MHz}$ and peak voltage of 20 volt. The modulation index will be :
Solution:
Modulation index
$\mu=\frac{A_{m}}{A_{c}}=\frac{20}{20}=1$
