Question

Give an expression for resistance

Answer 1

Answer:

hope it's helpful for you.....

Explanation:

Resistance. The electrical resistance of a circuit component or device is defined as the ratio of the voltage applied to the electric current which flows through it: If the resistance is constant over a considerable range of voltage, then Ohm's law, I = V/R, can be used to predict the behavior of the material.

Answer 2

Resistance is purposefully designed into resistors and integrated circuits using the resistivity of the material. Resistivity is defined as the degree to which a material resists the movement of electrons.

An ohm is a unit of electrical resistance seen between two points across a resistor, conductor, device or circuit. One ohm means that a potential difference (voltage) of 1V between these two points produces a current of 1A.