Question

Write a note on resistance and ohm's law?

Answer 1

Resistance

1. Resistance- It is a measure of opposition to the flow of current by any material.
2. Resistance depends on the length and cross-sectional area of the conductor.
3. SI unit of Resistance is Ohm(Ω).

Ohm's Law

1. Ohm's Law- It states that the current flowing through the conductor is directly proportional to the voltage applied.
2. The equation of Ohm's law is $\mathrm{V}=\mathrm{IR}$, where V= Voltage, I= Current, and R= Resistance.
3. Resistance is used as a constant of proportionality in Ohm's law.