A sinusoidal carrier voltage is amplitude modulated. The resultant amplitude modulated wave has maximum and minimum amplitude of 120 V and 80 V respectively. The amplitude of each side band is :

Step-by-step solution

Given here, A c + A m = 120         . . . 1 A c - A m = 80         . . . 2 From equation 1 and 2 , we have 2 A c = 200 ⇒ A c = 100   V and A m = 20   V Modulation index μ = 20 100 = 1 5 Amplitude of each side band = A c μ 2 = 100 × 1 10 = 10   volt