Question

3. Two sinusoidal currents are given
by the equations A = 10 sin (wt + 60)
and B = 15 sin (wt - 45). The phase
difference between them is
_ degrees.
O A) 105
O B) 75
O
C) 15
O
D) 60​

Answer 1

TOPIC :- WAVES

CONCEPT :- y = A sin(wt + ∆) , here ∆ is called phase.

Now,

The phase difference between two waves A sin(at + ∆1) and A sin (wt + ∆2) = ∆1 - ∆2

SOLUTION :-

Phase difference between the waves will be 60° - ( -45°) = 105°.

Hence, the phase difference between two waves is 105°.