## The battery is now disconnected from the plates and the separation of the plates is doubled ( = 0.78 cm). What is the energy stored in this

Question

The battery is now disconnected from the plates and the separation of the plates is doubled ( = 0.78 cm). What is the energy stored in this new capacitor?

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3 months 2021-09-02T05:12:52+00:00 1 Answers 1 views 0

The energy stored in this new capacitor is Explanation:

Suppose, Two parallel plates, each having area A = 2180 cm² are connected to the terminals of a battery of voltage as shown. The plates are separated by a distance d = 0.39 cm.

We need to calculate the charge

Using formula of capacitance   Put the value into the formula  The distance between the plates is doubled.

We need to calculate the new capacitance

Using formula of capacitance Put the value into the formula  We need to calculate the energy stored in this new capacitor

Using formula of energy Put the value into the formula  Hence, The energy stored in this new capacitor is 