Ohm’s law indicates the relationship between current, voltage, and ideal resistance. Ohm’s Law is given by scientist Georg Ohm.
Where,
I = Electric current,
V = Voltage across conductor,
R = Resistance of the conductor,
From these above three equivalent expressions of Ohm’s law, we can see that,
V ∝ I
It expresses that the voltage across a conductor is directly proportional to the current flowing through it, provided every physical condition and temperature stay constant.
Units Of Ohm’s Law Formula
| Sr. No. | Name | Unit |
|---|---|---|
| 1. | Electric current | Amperes |
| 2. | Voltage | Volts |
| 3. | Resistance | Ohms |
Ohm’s Law Statement
Ohm’s law states that the current through a conductor between two points is directly proportional to the voltage across the two points.
Uses of Ohm’s Law
- It is used to calculate the voltage, resistance, or current of an electric circuit.
- It is used to maintain voltage drop in the electric circuit.
- It is used in the dc ammeter and other dc shunts to divert the electric current.
- It is used to divide source voltage across the output resistance.