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A sperical shell , made of material of e...

A sperical shell , made of material of electrical conductivity `10^9//pi(Omegam)^(-1)`, has thickness t = 2 mm and radius R = 10 cm. In an arrangement, its inside surface is kept at a lower potential than its outside surface. The resistance offered by the shell is equal to

A

`5pixx10^(-12)Omega`

B

`2.5xx10^(-11)Omega`

C

`5xx10^(-12)Omega`

D

`5xx10^(-11)Omega`

Text Solution

Verified by Experts

The correct Answer is:
D
`R=(1)/(sigma) cdot (t)/(4 pi R^(2))` Using value `R = 5xx10^(-11) Omega`
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