Guess why Cylindrical Shell wants To contract it's surface?

Electricity and Magnetism Level 4

A very long thin cylindrical shell of radius \(R\) carries uniform ucrrent \(I_0\) along its length. Calculate the pressure on the wall of the cylindrical shell due to the magnetic force.

Details and Assumptions:

\(I_0 = \sqrt{\pi} \times 10 \text{ Ampere} \).
\(R = 1\text{ mm} \).
\( \pi = 3.14 \).

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