Homework Answers
a) magnetic flux through the flat surface = A*B*cos(theta) (here theta must be the angle between normal to the area and magnetic field)
= A*B*cos(180 - theta)
= -A*B*cos(theta)
= -pi*R^2*B*cos(theta) <<<<<<<<<<<<------------Answer
b) using Gauss' law in magnetism, net magnetic flux through any closed suarfce = 0
magnetic flux through flat surface + magnetic flux through curved surface = 0
magnetic flux through curved surface = -magnetic flux through flat surface
= -(-pi*R^2*B*cos(theta))
= pi*R^2*B*cos(theta) <<<<<<<<<<<<------------Answer
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