Two identical point charges each of magnitude are fixed at two vertices and of an…

PHYSICS · Multi-part · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance

Problem

Two identical point charges each of magnitude

q = 5.0\,\mu\text{C}

are fixed at two vertices

A

and

B

of an equilateral triangle of side

0.10\,\text{m}

. (a) Find the electric potential at the third vertex

C

due to the charges at

A

and

B

. (Take potential at infinity as zero.) (b) Hence calculate the work required to bring a third charge

q_3 = 5.0\,\mu\text{C}

from infinity to vertex

C

. State your answer with proper units.