Ohm Law definition

Ohm law definition :

According to this law, current is going in a circuit is directly proportional to the potential difference applied across its ends provided that resistance of circuit remain constant.

Mathematically :

It is given as

V = constant I

V = R I

V= I R

Explanation :

If we now any two values of the voltage , current or resistance quantities. We use ohm law to find third missing value. Ohm law is largely used in electronic circuits and very important law of electricity.

To find Voltage :

when I and R are given

V = I R

To find Current :

When V and R are given

I = V/R

To find Resistance :

When V and I are given

R = V / I

Ohm law Triangle :

The triangle in which three quantities of ohm law as shown is called ohm law triangle.

Explanation :

Figure show ohm law Triangle in which voltage is shown at the top , current is shown at the left and the resistance is shown at right portion.

Figures 1, 2 , 3 show three formula of ohm's law to find voltage , current and resistance.

If we keep resistance constant then I increases with increase in voltage and voice versa. If we keep voltage constant then current will increase with decrease in resistence on voice versa.