Question

What is ohm's law? Define the unit of Ohm's law? ​

Answer 1

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The potential difference (V) , across the ends of a given metallic wire in an electric circuit is directly proportional to the current flowing through it, provided it's temperature remains the same. This is called the Ohm's law.

$V \alpha \:I$

or $\frac{V}{I} = Constant$

Let constant = R

or V = IR

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Answer 2

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The potential difference (V) , across the ends of a given metallic wire in an electric circuit is directly proportional to the current flowing through it, provided it's temperature remains the same. This is called the Ohm's law.

Ohm’s Law Formula:-

Voltage= Current× Resistance

V= I×R

V= voltage, I= current and R= resistance

The SI unit of resistance is ohms and is denoted by Ω

This law is one of the most basic laws of electricity. It helps to calculate the power, efficiency, current, voltage, and resistance of an element of an electrical circuit.