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Two long concentric cylindrical conduct...

Two long concentric cylindrical conductors of radii a and b `(b lt a)` are maintained at a potential difference V and carry equal opposite current I. Show that an electron with a particular velocity u parallel to the axis may travel undeviated in the evacuated region between the conductors.

A

`(4piV)/(mu_0I" In" (b/a))`

B

`(2piV)/(mu_0I" In" b/a)`

C

`(2piV)/(mu_0I" In" (b/a))`

D

`(8piV)/(mu_0I" In" (a/b))`

Text Solution

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The correct Answer is:
B
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