1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# Ohm's law is valid________

Open in App
Solution

## Step 1: Ohm's lawOhm's law states that the voltage across a resistance is proportional to the current flowing through the resistance when the temperature and other physical states are constant with time.Ohm's law is defined by the form, $V=IR$, where, I is the current flowing through the resistance, R is the constant of proportionality and V is the voltage across the resistance.Step 2: Voltage vs current graphStep 3: Validation of ohm's lawAccording to Ohm's law, the voltage across the conductor is directly proportional to the current, i.e.$V\propto I$.Al the conductor, those who obey Ohm's law are the ohmic conductor and others are the non-ohmic conductor.If we plot a voltage vs current graph for any metallic conductor we will always get a straight line.But, in the case of semiconductor (germanium, silicon) material, Ohm's law is not valid, we will get a different graph, which does not obey Ohm's law.Therefore, Ohm's law is valid for all metallic conductors.

Suggest Corrections
2
Join BYJU'S Learning Program
Related Videos
Ohm's law
PHYSICS
Watch in App
Explore more
Join BYJU'S Learning Program