Question

A disk with a radius of R is oriented with its normal unit vector at an angle Q with respect to a uniform electric field. Which of the following would result in an increase in the electric flux through the disk? Check all that apply? A. increasing the area of the disk B. decreasing the given orientation angle of the disk C. decreasing the strength of the electric field D. increasing the given orientation angle of the disk, but not exceeding an angle of 90

Answer 1

As we know that electric flux is given by

$\phi = E.A$

$\phi = EAcos\theta$

so in order to increase the flux we have two options

1. By increasing the area of the disc

2. by changing the orientation of disc so the area of the disc is parallel to the electric field

so correct answer will be

 A. increasing the area of the disk