Find the modulation index of an AM wave having 8 V variation where maximum amplitude of the wave is 9 V.
Question
Find the modulation index of an AM wave having 8 V variation where maximum amplitude of the wave is 9 V.
Solution
The modulation index (m) of an Amplitude Modulated (AM) wave can be calculated using the formula:
m = ΔV / Vmax
where:
- ΔV is the variation in voltage, and
- Vmax is the maximum amplitude of the wave.
Given in the problem:
- ΔV = 8 V
- Vmax = 9 V
Substituting these values into the formula, we get:
m = 8 V / 9 V = 0.89
So, the modulation index of the AM wave is 0.89.
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