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

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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