Energy Stored in Different Coils

Solenoid \(A\) is tightly wound while solenoid \(B\) has windings that are evenly spaced with a gap equal to \({\rm {{ params.num }}} d\), where \(d\) is the diameter of the wire. The solenoids are otherwise identical.

Question Text

Determine the ratio of the energies stored per unit length of these solenoids when the same current flows through each.

Answer Section

Attribution

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