Question

Three charges Q_{1}=2.0*10^{-9} C,
-5.0*10^{-9} C and Q_{3}= -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

Answer #1

Refer the figure

Diagonal length,

===================

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.

**ANSWER:
**

**===========================**

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

*Here positive charge Q _{1} (2nC)is placed opposite
to P.*

*If Q _{2} (-5nC) is placed at the corner opposite to
P, the answer will be -4291.23V*

*If Q _{3} (-8nC) is placed at the corner opposite to
P, the answer will be -3895.97V*

============================

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