NEET2011PhysicsCapacitanceActual
A parallel plate condenser has a uniform electric field E( ~V / m ) in the space between the plates. If the distance between the plates is d( ~m ) and area of each plate is A ( ~m ^2 ) the energy (joule) stored in the condenser is
Options
- A1 2 ₀ E^2
- B₀ E A d
- C1 2 ₀ E^2 A d
- DE^2 A d / ₀
Correct answer
C. 1 2 ₀ E^2 A d
Step-by-step solution
The energy stored in the condenser aligned & U= 1 2 C V^2 & U= 1 2 ( A ₀ d )(E d)^2 ( C= A ₀ d and V=E d ) & U= 1 2 ₀ E^2 A d aligned