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A charge Q Is at center of a square if electric field intensity at the corners is E1 and intensity at midpoint is E2 then what is the ratio of E1 to E2


Asked by tandonyashika 11th May 2018, 8:44 PM
Answered by Expert
I assume the midpoint mentioned in the question means midpoint of the side of the square.
As shown in figure, distance between centre of square and corner of square is a/√2, where a is side of square.
Distance between midpoint of the side and centre of square is a/2.
 E1 = 2q/ [(4πε0)a2] and E2 = 4q/ [(4πε0)a2]; hence E1/E2 = 1/2
Answered by Expert 11th May 2018, 10:07 PM
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