Recent content by millifarads

Homework Statement \vec J_b = 3s \hat z \int \vec J_b \, d\vec a I need to solve this integral in cylindrical coordinates. It's the bound current of an infinite cylinder, with everything done in cylindrical coordinates and s is the radius of the cylinder. The answer should end up with a phi...

Anyone?

Homework Statement Find the electrostatic attraction force F between a point dipole and an infinite metallic conducting plate. The dipole moment p is perpendicular to the plate and the distance from the dipole to the plate is h. Find the work that has to be done in order to move dipole from...

Attached is a picture. The disk has radius 2r, I'm assuming the wires connect somewhere on the cylindrical sides.

Homework Statement The question asks for resistance R of a disk with radius r and fixed width w, whose cross sectional area is variable. Unlike in the picture below, the resistor is not connected to the circuit on the flat ends, but on the cylindrical sides. Homework Equations...