Question

A rectangular surface of length 3.25 cm and width 5.25 cm lies on the x-z plane at y=0. What is the flux through this surface due to a uniform magnetic field of 0.65 T directed 60° from the +x-axis?

Answer 1

The magnetic flux

$$\Phi=BA\cos \theta\\ =0.65*0.0325*0.0525*\cos30^\circ\\ =9.60*10^{-4}\:\rm Wb$$