Question

In an AC circuit, the current is given by i=5sin(100t-(pi)/2) and the AC potential is V=200sin(100)volt. Then the power consumption is

Answer 1

Explanation:

i= 5Sin(100t -π/2) = 5Cos(100t)

v= 200Sin(100t)

P= i*v = 1000Sin(100t)Cos(100t)

= 500Sin(200t)

[Because 2SinxCosx = Sin2x]