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The electric field due to a point charge...

The electric field due to a point charge depends on the distance r as parallely indicate how each of the following quantities depends on r ?
(a) Intensity of light from a point source.
(b). Electric potential due to a point charge.
(c) Electrical potential at a distance r from to centre metallic sphere given `r lt` radius of the sphere.

Text Solution

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`(a) I prop (1)/(r^(2))`
(b) `Vprop (1)/(r)`
(c) V does not depend on r.
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