(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A plane wave of 1 MHz frequency in free space is incident normally on a copper

surface [[tex]\sigma[/tex]=5.8*10^7, [tex]\mu[/tex]_{r}=1, and [tex]\epsilon[/tex]_{r}=1]. If the magnetic field strength at the surface is 1 mA m-1, find the depth at

which it is 2.5% of this value. Calculate the value of electric field on the surface

of the copper. Make a comment on the total power propagated inside the copper.

3. The attempt at a solution

I am mostly concerned with how to find the depth at which the magnetic field is 2.5% of its original value. I simply don't have any resources on how to calculate this. Could anybody point me towards the correct equations? Thanks!

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Electromagnetics Specifically depth problems.

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

**Physics Forums | Science Articles, Homework Help, Discussion**