MHT CET 2024 Physics question

Physics Electrostatic Potential and Capacitance MHT CET 2024

Four electric charges +q, +q, –q and –q are placed in order at the corners of a square of side 2L. The electric potential at point midway between the two positive charges is

(1)
(2)Correct
(3)
(4)

Answer: (2)

Solution

Take the square with +q at , +q at , –q at and –q at (charges in order round the square). The point midway between the two positive charges is . Distances from M: to each +q it is ; to each –q it is . Potential is a scalar sum: $V =

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Question ID VK-095575