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Constant Magnetic Field, Magnetics

Problem 3.241

A very long straight solenoid carries a current I. The cross-sectional area of the solenoid is equal to S,S, the number of turns per unit length is equal to nn. Find the flux of the vector B through the end plane of the solenoid.

Reveal Answer
 3.241. Φ=Φ0/2=μ0nIS/2 \text { 3.241. } \quad \Phi=\Phi_{0} / 2=\mu_{0} n I S / 2 where Φ0\Phi_{0} is the flux of the vector B\mathbf{B} through the cross-section of the solenoid far from its ends.
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