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A charge Q is uniformly distributed over...

A charge Q is uniformly distributed over a large plastic plate. The electric field at a point P close to the centre of the plate is `10V m^(-1)`. If the plastic plate is replaced by a copper plate of the same geometrical dimension and carryin the same charge `Q_1` the electric field at the point P will become

A

Zero

B

`5Vm^(-1)`

C

`10 V m^(-1)`

D

`20 Vm^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C


Let A area of each plate `E_1=(Q//A)/(2e_0) & E_2=2. (Q//2)/(2e_0)=E_1`
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