The aerial current of an AM transmitter is 18 A when unmodulated but increases to 20 A when modulated.The modulation index is
(a) 0.68
(b) 0.73
(c) 0.89
(d) 0.95
I have been asked this question in unit test.
The doubt is from Amplitde Modulation topic in division EDC Overview of Electronic Devices & Circuits