Posted by Anonymous on Saturday, April 7, 2012 at 1:21am.
Compute the inductance L, in Henries.
The formula you need is here:
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/indsol.html
The stored energy is
E = (1/2) L I^2
E will be in Joules if I is in amperes.
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