Q.A parallel plate capacitor with air has energy $U_1$ . When it is filled with dielectric of constant $K=2$ and battery remains connected, the energy becomes $U_2$ . Then $U_2/U_1$ is (NEET 2023)

1/2

2

4

1/4

The correct solution involves applying the fundamental concept to derive the final value step by step...

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Q.A parallel plate capacitor with air has energy U1U_1U1​. When it is filled with dielectric of constant K=2K=2K=2 and battery remains connected, the energy becomes U2U_2U2​. Then U2/U1U_2/U_1U2​/U1​ is (NEET 2023)