# Electric and magnetic similarity

Discussion in 'General Electronics Chat' started by LoveVirus, Dec 15, 2011.

1. ### LoveVirus Thread Starter New Member

Dec 15, 2011
1
0
I found many similarities electromagnetic variables and relationships
eg:
Magnetic field strength H-> voltage U
Magnetic induction B-> current I
Permeability 1/μ-> resistance R
Magnetic volume V/2-> circuit time T
We know the electrical inside W = UIT = UUT / R = IIRT
So magnetism which W = HB (V / 2) = HH (V / 2) (μ) = BB (1 / μ) (V / 2)
Is it a coincidence that it is???

2. ### thatoneguy AAC Fanatic!

Feb 19, 2009
6,357
718
I believe those similarities are why we don't have electric fields and magnetic fields, but no electromagnetic fields.

3. ### russ_hensel Distinguished Member

Jan 11, 2009
820
47
We do have electromagnetic fields, in fact except in static cases all the fields are some of each.

If you look at the basic equations ( maxwell's ) you will see the similarity starts there. One of the big differences is that we do not observe any magnetic charges in nature. We could stick them in the equations ( perhaps ) but we can not find them. Nobel prize waiting for the first to find them.