Chapter 15 - Communication Systems

important questions class 12 physics chapter 15 communication systems 1

important questions class 12 physics chapter 15 communication systems 2

important questions class 12 physics chapter 15 communication systems 3


Practise This Question

Following figure shows an ac generator connected to a "block box" through a pair of terminals. The box contains possible R, L, C or their combination, whose elements and arrangements are not known to us. Measurements outside the box reveals that e = 75 sin (sin  ωt) volt, i = 1.5 sin (ωt + 45) amp then, the wrong statement is