An isolated metallic object is charged in vacuum to a potential V0 usi

1.	An isolated metallic object is charged in vacuum to a potential V0 using a suitable source, its electrostatic energy being W0. It is then disconnected from the source and immersed in a large volume of dielectric with dielectric constant K. The electrostatic energy of the sphere in the dielectric is :(A) K2W0(B) K W0(C) W0/K2(D) W0/K
Answer» Correct option (D) W₀/K Explanation: U = Q² /2C since C will become k times So U will become 1/k times

An isolated metallic object is charged in vacuum to a potential V0 using a suitable source, its electrostatic energy being W0. It is then disconnected from the source and immersed in a large volume of dielectric with dielectric constant K. The electrostatic energy of the sphere in the dielectric is :(A) K2W0(B) K W0(C) W0/K2(D) W0/K

Answer»

Correct option (D) W₀/K

Explanation:

U = Q² /2C since C will become k times

So U will become 1/k times

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