A parallel plate capacitor is filled by a dielectric whose relative permittivity varies with the applied voltage (U) as ε= αU where α = 2V-1. A similar capacitor with no dielectric is charged to U0= 78 V. It is then connected to the uncharged capacitor with the dielectric. Find the final voltage on the capacitors.

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7 months ago

This is a long answer type question as classified in NCERT Exemplar

To lift the disc ther must be some electrostatic force is reqired.

F=qE……. (1), E=V/d………. (2)

But the charge required during the process is - 0 v d π r2, using this relation in 1 and 2

F=- 0 v d π r2V/d…… (3)

Also to balance something F=mg……. (

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Physics Ncert Solutions Class 12th 2023

Physics Ncert Solutions Class 12th 2023

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