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Question

A charge Q is distributed uniformly on a ring of radius r a sphere of equal radius is constructed with its centre at Periphery Of Rings find electric flux through surface of a sphere

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Solution

Dear Student,
Let center of ring be O and Sphere center be O'Let P, Q are intersection pointsOO' bisects PQ in two equal parts,S is the bisecting pointPOS, QOS forms a right angle trianglePO=r, OS=r/2POS=θcosθ=OSPS=0.5θ=60angle subtendended by ring is 2θ=120For 2π radians,charge is qfor 2π/3 radians, charge is q/3ϕ=q3ε0

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