Grade 12Electromagnetic Induction
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1 Answer
Arun
let A,B,C are three vertices ...
charge at A,B is q but at C charge is -2q ...
A(q) ...................B(q)
C(-2q)
charge of C can be written as -q + -q
q charge of A & -q charge of C becomes 1 dipole ...
q charge of B & another -q charge of C makes another dipole ..
direction of dipole moments of both is rowards C .....
angle bw them will be 60o ...
now resultant = root(p2+p2+2p2cos60o) = root3 (P)
now , P = qa so resultant = root3(qa)
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