Question

# Three charges Q1=2.0*10-9 C, -5.0*10-9 C and Q3= -8.0*10-9 C are located at three corners of...

Three charges Q1=2.0*10-9 C, -5.0*10-9 C and Q3= -8.0*10-9 C are located at three corners of a square. Each side of the square has a length of 2.0 cm. What is the electric potential at the empty corner of the square produced by these three charges?

I know the answer is -5200 V but I need to see the work and explanation

Refer the figure

Diagonal length,

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Electric potential is a scalar quantity. So total electric potential at P is equal to the sum of electric potential at P due to individual charges.

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Note: The answer will be different every time the order is changed.

Here positive charge Q1 (2nC)is placed opposite to P.

If Q2 (-5nC) is placed at the corner opposite to P, the answer will be -4291.23V

If Q3 (-8nC) is placed at the corner opposite to P, the answer will be -3895.97V

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