The electric field in a region is given by `bar(E)=abar(i)+bbar(j)`. Here a and b are constants. Find the net flux pasing through a square area of side L parallel to y-z plane.

Explanation

Given `vec(E)=a hat(i)+b hat(j)`
`vec(S)=L^(2) hat(i)`
`phi=vec(E).vec(S)=(a hat(i)+bhat(j)).L^(2) hat(i)`
`:. phi =aL^(2) [ :' hat(i).hat(i)=1 and hat(i).hat(j)=0]`