Home
Class 12
PHYSICS
The plates of a parallel plate capacitor...

The plates of a parallel plate capacitor have an area of 90 `cm^2` each and are separated by 5.5 mm. The capacitor is charged by connecting it to a 400 V supply.
How cuch electrostatic energy is stored by the capacitor?

Text Solution

Verified by Experts

Capacitance, `C= (in_0 alpha)/(d) = (8.854xx10^(-12) 90xx10^(-4))/(2.5xx10^(-3))= 3.187 xx10^(-11)F`
Stored energy `= (1)/(2)CV^2 = (1)/(2)xx3.187xx10^(-11)xx400^2`
`= 2.55xx10^(-6)J`
Promotional Banner

Topper's Solved these Questions

  • CAPACITANCE AND CAPACITOR

    CHHAYA PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|29 Videos

  • CAPACITANCE AND CAPACITOR

    CHHAYA PUBLICATION|Exercise VERY SHORT ANSWER TYPE QUESTIONS|40 Videos

  • CAPACITANCE AND CAPACITOR

    CHHAYA PUBLICATION|Exercise HIGHER ORDER THINKING SKILL|39 Videos

  • ATOMIC NUCLEUS

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|14 Videos

  • COMMUNICATION STSTEM

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|28 Videos

Similar Questions

Explore conceptually related problems

The plates of a parallel-plate capacitor have an area of 90cm^2 each and are separated by 2.5 mm. The capacitor is charged by connecting it to a 400V supply. How much electrostatic energy is stored by the capacitor?

The plates of a parallel plate capacitor have an area of 90 cm^2 each and are separated by 2.5 mm. The capacitor is charged by connecting it to a 400 V supply. View this energy as stored in the electrostatic field between the plates and obtain the energy per unit volume (u).

The plates of a parallel-plate capacitor have an area of 90cm^2 each and are separated by 2.5 mm. The capacitor is charged by connecting it to a 400V supply. View this energy as stored in the electrostatic field between the plates and obtain the energy per unit volume, u_E . Hence, arrive at a relation between u_E and magnitude of electric field E between the plates.

The plates of a parallel plate capacitor have an area of 90 cm^2 each and are separated by 5.5 mm. The capacitor is charged by connecting it to a 400 V supply. Arrive at a relation between u and the magnitude of electric field between the two plates.

A 900 pF capacitor is charged by 100V battery [Fig. (a)]. How much electrostatic energy is stored by the capacitor ?

A 900 pF capacitor is charged by a 100 V battery. How much electrostatic energy is stored in the capacitor?

The area of each plate of a parallel plate capacitor is A = 600 cm^2 and their separation is d = 2.0 mm. The capacitor is connected to a 200 V dc source. Find out the uniform electric field between the plates in SI unit?

The area of each plate of a parallel plate capacitor is A = 600 cm^2 and their separation is d = 2.0 mm. The capacitor is connected to a 200 V dc source. Find out the surface density of charge on any plate. Given, in_0 = 8.85xx10^(-12)F*m^(-1) .