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The electric intensity at a point distan...

The electric intensity at a point distant 1 m from the centre of a sphere of radius 25 cm in air is `10^(4)N//C`. The surface density of the charge on the surface of sphere is

A

`1.416muC//m^(2)`

B

`2.416muC//m^(2)`

C

`1.446muC//m^(2)`

D

`2muC//m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
`E=(sigmaR^(2))/(in_(0)kr^(2))`
`therefore" "sigma=(10^(4)xx8.85xx10^(-12)xx1)/((25xx10^(-2))^(2))=1.416muC//m^(2)`
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