 #1
hidemi
 208
 36
 Homework Statement:

A cylindrical region of radius R contains a uniform magnetic field, parallel to its axis, with magnitude that is changing linearly with time. If r is the radial distance from the cylinder axis, the magnitude of the induced electric field inside the cylindrical region is proportional to
A) R
B) r
C) r²
D) 1/r
E) 1/ r²
The answer is B.
 Relevant Equations:
 (See better interpretation in the "Attempt at a Solution" section)
I used the equation below and the attachment to rationalize.
https://www.physicsforums.com/attachments/282163
https://www.physicsforums.com/attachments/282163