GATE EE 2015 Set 2 — Question 46
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Electromagnetic Fields → Electrostatics → Method of Images
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Question
Two semi-infinite conducting sheets are placed at right angles to each other as shown in the figure. A point charge of is placed at a distance of from both sheets. The net force on the charge is , where is given by
Correct answer
(D) 1-2√(2)8√(2) i + 1-2√(2)8√(2) j
Solution
Using the method of images for a charge at near two perpendicular grounded conducting planes (at and ), we place three image charges:
1. at
2. at
3. at
The net force on the original charge is the vector sum of forces from these image charges:Comparing with the given expression, .Continue learning with Success Tracker
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