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Master J
Jan10-11, 01:15 PM
A coaxial cable has a conductor lying at the centre of a thin walled cylindrical conductor. These conductors are separated by a plastic dielectric, and they carry equal current in opposite directions.

The radii and current are given, and I must find the magnitude and direction of magnetic field.


I'm generally good with stuff like this and have a decent grasp of the physics. I'm just unsure how to approach this question. Whats the best way of going about it? Any nudges in the right direction??

Thanks!