Question

three charges +2q , -q,-q are locared at vertices of an equlilateral triangle at the centre of triangle -
ans is the field is non zero but potential is zero.
how?

Answer 1

HEY DEAR !!!!

HERE IS UR ANSWER.

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Let an equilateral triangle ABC

at A charge is +2q
" " B" " " " " " " " -q
"" " C " " " " " " " -q

We know potential = V = Kq/ r

so let distance center from all points be r

so

V(A) = K 2q / r

V(B) = - K q /r

V(C) = - K q / r

now taking net at center

V = Va + Vb + Vc

V = K / r ( 2q - q - q )

V = K / r ( 2q - 2q )

V = K / r ( 0 )

V = 0

HOPE HELPED

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