a point charge q is placed at a perpendicular distance x from centre of very large circular sheet .find flux through sheet .R is radius of sheet
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180 -90 is eqaual to... the answer is 90
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Electric flux through the circular sheet of radius R is
Explanation:
Electric flux is given by
Consider a small element in the shape of ring of radius and hence width is .
Then electric field is in radial direction, given by ,
areal vector is perpendicular to the sheet, given by
and the angle is
Substituting between the limits 0 and radius of sheet R, the total flux through the element is
Let and
Then when and
Substituting the limits,
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