A wide copper strip of width l is bent into piece of slendder tubing of radius R with two plane extension as shown (Fig. 1.12). A current I flows through the strip, distributed uniformly over its width. Ib this way, one-turn solenoid has been formed (a) Derive an expression for the magnetic field in the tubular part.

A wide copper strip of width l is bent into piece of slendder tubing o

1.	A wide copper strip of width l is bent into piece of slendder tubing of radius R with two plane extension as shown (Fig. 1.12). A current I flows through the strip, distributed uniformly over its width. Ib this way, one-turn solenoid has been formed (a) Derive an expression for the magnetic field in the tubular part.
Answer» ANSWER :`(mu_(0)i)/(L)`

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