Electric potential V(x) in a region around origin is given by V(x) = 4x^2,volts . electric charge en

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2. Electric Potential and Capacitance

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The electric potential $V(x)$ in a region around the origin is given by $V(x) = 4x^2\,volts$ . The electric charge enclosed in a cube of $1\,m$ side with its centre at the origin is (in coulomb)

A

$8\,{\varepsilon _0}$

B

$-4\,{\varepsilon _0}$

C

$0$

D

$-8\,{\varepsilon _0}$

(AIEEE-2012)

Solution

Charges reside only on the outer surface of a conductor with cavity.

Standard 12

Physics

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