The maximum amplitude of an amplitude modulated wave is 16 V, while the minimum amplitude is 4 V. The modulation index is

Options

A. 0.4
B. 0.5
C. 0.6
D. 4

Answer

c

Explanation

Maximum amplitude,
`E_(c) +E_(m) =16`
Minimum amplitude,
`E_(c) –E_(m)= 4m`
`2E_(c) = 20`
`E_(c)=1=`
`mu= E_(m)/E_(c)``therefore mu=0.6`.