Question

Magnetic Field of a Rotating Charged Sphere

Answer 1

(a) Calculate the magnitude of the total current (in A) carried by the rotating sphere

Answer 2

\[I=\frac{\mathrm dq}{\mathrm dt}=\frac{\mathrm d}{\mathrm dt}\sigma A=\frac{\mathrm d}{\mathrm dt}4\pi r^2\]
right?

Answer 3

i dont think so

Answer 4

well i dont know how to do this problem at all

Answer 5

me too

Answer 6

\[\omega=\frac{\mathrm d\theta}{\mathrm d t}\]

Answer 7

???

Answer 8

unable to find similar problem

Answer 9

I have tried examples from Griffiths but I am doing something wrong with th sphaerical coordinates.