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A resistance of frustum shape is shown i...

A resistance of frustum shape is shown in figure. If a current i passes through the resistance, the electric field at A and B are related as -

A

`E_(A) gt E_(B)`

B

`E_(B) gt E_(A)`

C

`E_(A) =E_(B)`

D

there is no relation

Text Solution

Verified by Experts

The correct Answer is:
A
`vecE= rho vecJ`
where `rho-`Resistivity
`vecJ-` current density
`|vecJ_(A)| gt |vecJ_(B)|`
`:.E_(A) gt E_(B)`
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