State Ohm’s law.
Ohm’s law: According to Ohm’s law, 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 its temperature remains same. V ∝ I ⇒ VI = constant VI = R (R = constant) ⇒ V = IR Here, R is constant for a given metallic wire at a given temperature and is called resistance. V-I graph of Ohm’s law and its experimental setup:
