GATE EE 2018 Set 1 — Question 20
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Electromagnetic Fields → Electrostatics → Method of Images
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Question
A positive charge of nC is placed at where all dimensions are in metres. Consider the plane to be a conducting ground plane. Take F/m. The component of the E field at is closest to
Correct answer
(D) -999.09 V/m
Solution
According to the method of images, a conducting ground plane at can be replaced by an image charge placed at for a point charge placed at .The electric field at any point is the vector sum of the fields due to the original charge and the image charge.
Given:
nC C
F/m
Point of interest The -component of the electric field is given by:At with :The value is closest to V/m. Thus, option (D) is correct.
Given:
nC C
F/m
Point of interest The -component of the electric field is given by:At with :The value is closest to V/m. Thus, option (D) is correct.
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