Question

Derive an expression for potential energy of a system of two point charge in an external charge

Answer 1

Answer:

ɦɛʆʆѳ ,ɱɑtɛ ❤

Coulombic force acting on a test charge F=

r

2

kQq

where k=

4πϵ

o

1

Potential energy of the two charges U=−∫F.dr

∴ U=−∫

r

2

kQq

dr

Or U=−kQq∫

r

2

1

dr

Or U=−kQq×

r

−1

⟹ U=

r

kQq

I ɦѳpɛ itร ɦɛʆp u ☺✔