The plates of a parallel plate capacitor have an area of 90 cm2 eachand are separated by 2.5 mm. The capacitor is charged by connectingit to a 400 V supply. (a) How much electrostatic energy is stored by the capacitor? (b) View this energy as stored in the electrostatic field betweenthe plates, and obtain the energy per unit volume u. Hence arrive at a relation between u and the magnitude of electricfield E between the plates.

The plates of a parallel plate capacitor have an area of 90 cm2 eachan

1.	The plates of a parallel plate capacitor have an area of 90 cm2 eachand are separated by 2.5 mm. The capacitor is charged by connectingit to a 400 V supply. (a) How much electrostatic energy is stored by the capacitor? (b) View this energy as stored in the electrostatic field betweenthe plates, and obtain the energy per unit volume u. Hence arrive at a relation between u and the magnitude of electricfield E between the plates.
Answer» The plates of a parallel plate capacitor have an area of 90 cm2 eachand are separated by 2.5 mm. The capacitor is charged by connectingit to a 400 V supply. (a) How much electrostatic energy is stored by the capacitor? (b) View this energy as stored in the electrostatic field betweenthe plates, and obtain the energy per unit volume u. Hence arrive at a relation between u and the magnitude of electricfield E between the plates.

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