Circuits 1, 3 and 4 are the circuits that show the Ohm's law.
What is Ohm's law?
Ohm's Law, named after physicist Georg Simon Ohm, is a foundational principle in electrical physics.
According to Ohm's law, a conductor's resistance and current flow are inversely related to each other and directly proportional to the voltage across them. This law is essential to applications in electronics and electrical engineering because it provides a basic tool for examining and comprehending the behavior of electrical circuits.