Question

A positive point charge (+q) is kept near a charged plate.(i) Draw the electric field lines of forces from point charge to
the plate.
(ii)Derive an expression for the electric field intensity at the
surface of the plate.​

1

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Answer 1

Answer:

Definition of the electric field:

An electric field is the strength of an electric field at any certain point.  

Explanation:

An electric field is equal to the electric force per unit experienced by a test charge that is placed at another point.

E = qF

According to Gauss law, a spherical surface with a charge at its Gaussian surface center.

In equation:

E(A)=ϵ0q

⟹E(4πr2)=ϵ0q

⟹E=4πϵ0r2q