CBSE Class 12 · 2012 · ElectrostaticsShort Answer

Draw a plot showing the variation of
(i) electric field (

E

) and
(ii) electric potential (

V

) with distance

r

due to a point charge

Q

Solution

For a point charge,

E \propto \frac{1}{r ^{2}}

and

V \propto \frac{1}{r}

. Both curves fall off with distance, but

E

decreases faster than

V

. The two curves are drawn on the same axes against

r

CBSE Class 12 Board · 2012 · Subjective

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