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# Infinitely long hollow conducting tube

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Consider n infinitely long hollow conducting tube tht is split in half with each half held at the indicated potential.

calculate B_o, B_n, A_n

what equation would plot V(rho, pi/2).

attatched copy of diagram.

https://brainmass.com/physics/system-work/infinitely-long-hollow-conducting-tube-288286

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Note that I used r and theta instead of rho and phi (old habits die hard)

Laplace equation is:
(1.1)
With the following boundary conditions:
(1.2)
The potential is finite everywhere, especially at and as :
(1.3)
(1.4)
And the last condition is that the potential is periodical:
(1.5)
Since the system is completely symmetric with respect to the xy plane the potential has no dependence on the z-coordinate and equation (1.1) becomes a two dimensional problem in polar coordinates:
(1.6)
We assume a solution in the form:
(1.7)

Then:

And finally:
...

#### Solution Summary

The expert examines infinitely long hollow conducting tube.

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