Alternating Current

Don't know the answer.

@KuldeepJaidev write 4coswt as 4sinwt +pi/2
Now making phaser we see net voltage is √8^2+4^2=√80
So verma=√40=2√10
Don't know the answer.
@KuldeepJaidev write 4coswt as 4sinwt +pi/2
Now making phaser we see net voltage is √8^2+4^2=√80
So verma=√40=2√10