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Q & A: Can you make an electro-magnet with mercury?

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Most recent answer: 12/09/2014
Q:
If a small sealed cylinder (r = 0.25, h = 6.0) containing liquid mercury is made into an electromagnet at room temperature by coiling copper wire around the tube of mercury, will the cylinder become a magnet without producing heat or excessive vapor pressure? What is the formula to compute the magnetic force of attraction?
- David Herrera (age 68)
Tucson, AZ USA
A:

Hello David,

The magnetic permeability of mercury is very very small and will not make an electromagnet similar to an equivalent piece of iron.   See for a more detailed explanation.

 

LeeH

 

 


(published on 12/09/2014)

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