An air capacitor is charged to a certain potential difference.it is then immersed in oil .What happens to its(a)capacitance(b)charge(c)potential.
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As we know air filled capacitor is said to be no dielectric medium.
Hence air filled capacitor has dielectric constant of ~1(at 1atm of air)
While for oil, this constant becomes near to ~42.5.
Do you know why we use dielectric medium?
I assume you know it. It used to increase the capacitance and then of course charge too. Then what about potential??
Estimate it to me.
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capacitance will be incresed as \[\epsilon \times a\] is directle proportional to \[\epsilon\] and ϵ is more in oil.
What happens to the charge and potential depends on whether or not the battery used to charge the capacitor is disconnected before it is immersed in oil.