Voltage

What is Voltage ?

Voltage(V) is a diffrence in electrical potential energy, per unit of charge, between two points.

V = Potential energy

               Charge

Unit

Potential energy means potential to do work so energy measures in joules & charge in coulomb.

V =    Joule       = volt (v)

      Coulomb

Simply voltage pushesh electrons around a circuit, without voltage electrons moves freely in any direction.

Analogy with water

As voltage decreases brightness of bulb decreases because there is less pressure to force electron in the circuit so less light is produced.

Another names to Voltage

1) Potential Diffrence

2) EMF

3) Electric pressure

4) Electric tension