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a point q charge is kept at the centre of the fixed semicircular thread having a uniform charge per unit length a,the radius of semicircular thread being r .the force required to keep the charge stationary is?
(i did not understood its answer given 10 yrs ago).
plz solve this again

best and amazing , 6 Years ago
Grade 12
anser 1 Answers
Saurabh Koranglekar
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Last Activity: 6 Years ago
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