Question

If the maximum peak to peak voltage of an $AM$ wave is $16mV$ and the minimum peak to peak voltage is $4mV,$ calculate the modulation factor$.$

• A. $0.6$
• B. $2.2$
• C. $1.2$
• D. $4$

Answer 1

The correct option is A $0.6$

Maximum voltage$:$ $V_{max}=\frac{16}{2}=8mV$

Minimum voltage$:$ $V_{min}=\frac{4}{2}=2mV$

$Modulationfactor=\frac{V_{max}-V_{min}}{V_{max}+V_{min}}$

$\Rightarrow$ Modulation factor$=\frac{8-2}{8+2}=0.6$

Hence,

option $\left(A\right)$ is correct answer.