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Electromagnetic Induction. Maxwells Equations

Problem 3.336

An iron tore supports N=500N=500 turns. Find the magnetic field energy if a current I^=2.0\hat{I}=2.0 A produces a magnetic flux across the tore's cross-section equal to Φ=1.0mWb\Phi=1.0 \mathrm{mWb}.

Reveal Answer
W=1/2NΦI=0.5 JW=1 / 2 N \Phi I=0.5 \mathrm{~J}
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