A parallel plate air capacitor is made using two square plates each of side 0.2 m, spaced 1 cm apart. It is connected to a 50V battery.
If the battery is disconnected and then the plates are pulled apart to a separation of 2 cm, what are the answers to the above parts ? S

Explanation

To solve the problem step by step, we will break it down into parts as described in the video transcript.

### Given Data:
- Side length of plates, \( a = 0.2 \, \text{m} \)
- Separation between plates, \( d_1 = 1 \, \text{cm} = 0.01 \, \text{m} \)
- Voltage of the battery, \( V = 50 \, \text{V} \)
- New separation after disconnecting the battery, \( d_2 = 2 \, \text{cm} = 0.02 \, \text{m} \)

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