Measuring Magnetic Field (Help)!

[M-Gaffar]

Hi , Everyone!

 

I m confuse... how to measure the electric field inside the hole? i know if it was the center of the ball, it would be E = 0, but if the condition like this i dont know. how to measure it?

 

Thanks.

Edited November 29, 2015 by M-Gaffar

[swansont]

Measure or calculate? E or B? And what is the statement of the problem?

[M-Gaffar]

sorry

wrong title.. Calculate E. bad english

 

thank you.

the problem is : calculate E in hollow of the ball.

and i want to ask again... why this equations can be so different (image) ??

[swansont]

What is the ball made of? It matters.

[M-Gaffar]

its non-conducting ball, homogenous charged ball... thank you.

[swansont]

its non-conducting ball, homogenous charged ball... thank you.

OK.

 

What's the solution for a ball with no void?