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A charge Q is uniformly distributed over a large plastic (non conducting) sheet.the field at a point close to a center of the plate near the surface is 20v/m .If the plate is replaced by a copper plate of the same geometrical dimensions and carrying the same charge Q then what is the electric field at that point

A charge Q is uniformly distributed over a large plastic (non conducting) sheet.the field at a point close to a center of the plate near the surface is 20v/m .If the plate is replaced by a copper plate of the same geometrical dimensions and carrying the same charge Q then what is the electric field at that point

Grade:12

2 Answers

Arun
25750 Points
4 years ago
5 V m-1 is the correct answer as the charge Q is uniformly distributed over a large plastic sheet. 
Then electric field at a point close to the centre of the plate near the surface is 20 V/M. 
Plate is replaced by a copper plate of the same geometrical dimensions and carrying the same charge Q so that the electric field at that point is 5 V m-1.
 
 
Khimraj
3007 Points
4 years ago
10 V/m as surface charge density is same for both.
 
and electric field fr sheet is given by
 
E=sigma/2epsilon
 

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