Three Charges 2q, -q and -q lie at vertices of a triangle. The value of E and V at centroid of triangle will be-
(i) E#0 and V#0
(ii) E=0 and V=0
(iii) E#0 and V=0
(iv) E=0 and V#0
(ii) E=0 and V=0
(iii) E#0 and V=0
(iv) E=0 and V#0
(iii) E#0 and V=0
Explanation:
Net E F I at G ≠ O
Net Potential at G,
V = `\frac{"K2Q"}{"r"}`-`\frac{"KQ"}{"r"}`-`\frac{"KQ"}{"r"}` = 0
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