Question

A current I flows along a thin walled tube of radius R with a long longitudinal slit of width b (<<R). What is the magnetic field induction at a distance r(<R)?​

Answer 1

Answer:

Using Principle Of superposition ,

field due to strip in place of slit + field due to tube with slit B = 0

so,

B= field due to strip place of slit B

$\large{\mathcal B={\frac{uo}{2πr}}×{\frac{I}{2πR-b}}×b}$

✌️@14riyaz14✌️

Answer 2

Answer:

hope it will be right answer

The thin walled tube with a longitudinal slit can be considered equivalent to a full tube and s strip carrying the same current density in the opposite direction.

inside the tube the former does not contribute so the total magnetic field is simply that due to the strip , that is B=ûI *h/ (4π^2Rr)

where r is the distance of strip

Thank you ❤️❤️❤️