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Three charges $- q, + q and + q$ are situated in $X - Y$ plane at points $(0, - a), (0, 0) and (0, a)$ respectively. The potential in xy plane at a distant point r (r > > a) in a direction making an angle $θ$ from the Y-axis :

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q4πε0r+qacos⁡θ4πε0r2

q4πε0r+qacos⁡θ2πε0r2

q4πε0r+qasin⁡θ4πε0r2

q4πε0r+qasin⁡θ2πε0r2

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detailed solution

Correct option is B

V = potential due to the point charge q at the origin+ potential due to dipole=Kqr+KPcosθr2 = q4π∈0r+14π∈02aqcos θr2

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Three charges −q,+q and +q are situated in X−Y plane at points (0,−a),(0,0) and (0,a) respectively. The potential in xy plane at a distant point r (r > > a) in a direction making an angle θ from the Y-axis :

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Ready to Test Your Skills?

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Three charges $- q, + q and + q$ are situated in $X - Y$ plane at points $(0, - a), (0, 0) and (0, a)$ respectively. The potential in xy plane at a distant point r (r > > a) in a direction making an angle $θ$ from the Y-axis :