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in Physics by (71.7k points)

The antenna current of an AM broadcast transmitter, modulated to a depth of 40% by an audio sine wave is 11 A. It increases to 12 A as a result of simultaneous modulation by another audio sine wave. What is the modulation index due to this second wave?

(1) 0.56

(2) 0.42

(3) 0.64

(4) 0.75

1 Answer

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Best answer

Correct Option (3) 0.64

Explanation:

It = 1A, Ic = 10.58 A. m is to be found out.

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