Explain the Ohm's law.

Explanation

Ohm.s law states that current flowing through c conductor is proportional to the potential difference across its two ends provided the physical conditions of the conductor remain unchanged.

if V is the potential difference between two ends of a conductor and I is the current flowing through it, then from Ohm.s law we have
`VpropI or V=RI`
where R is the constant of proportionality and is called the resistance of the conductor. the graph between V and I is as shown in the figure.