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A thick shell with inner radius R and ou...

A thick shell with inner radius R and outer radius 3R has a uniform charge density `sigma c//m^(3)`. It has a spherical cavity of radius R as shown in the figure. The electric field at the centre of the cavity is

A

zero

B

`2/3 piGrhoR`

C

`5/3 piGrhoR`

D

`7/3 piGrhoR`

Text Solution

Verified by Experts

The correct Answer is:
D
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