1. Tardigrade
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  3. Physics
  4. A charge Q is uniformly distributed over a large square plate of copper. The electric field at a point very close to the centre of the plate is 10 V/m. If the copper plate is replaced by a plastic plate of the same geometrical dimensions and carrying the same charge Q uniformly distributed, then the electric field at the point P will be

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Q. A charge $Q$ is uniformly distributed over a large square plate of copper. The electric field at a point very close to the centre of the plate is $10 \,V/m$. If the copper plate is replaced by a plastic plate of the same geometrical dimensions and carrying the same charge $Q$ uniformly distributed, then the electric field at the point $P$ will be

BHUBHU 2008

Solution:

Electric field will remain same as charge density $ \sigma $ remain same $ (E=\sigma /{{\varepsilon }_{0}}) $ .