electrostatics p2

Electric potential

The work done per unit positive test charge in bringing it from infinity to a point in an electric field without changing its kinetic energy.

Electric potential (E)=

E=W/q ( volt)

Electric potential

Electric Potential Energy is the actual energy possessed by a charge because of its position in an electric field.

Electric potential depends on ?

It depends on electric potential

The charge

Electric potential energy (U)=

U=qV (joule)

Suppose there are two points A and B, and:

Potential at A = 100 V

Potential at B = 20 V

A +1 C charge is released from A.

Question: In which direction will it move naturally?

A → B

B → A

And why?

positive charge always moves naturally from higher potential to lower potential, just like a ball rolls from a higher place to a lower place.A → B ✅

Positive charge:

Negative charge (electron):

Positive charge: Higher potential → Lower potential

Negative charge (electron): Lower potential → Higher potential