Which are the types of carrier movements and how are they activated

Drift - As a result of an electric field

Diffusion - As a result of a carrier gradient, by other words a difference in the carrier level from one side to the other, usually when we have a p-n junction

JA

Related Physics A Level answers

All answers ▸

An aeroplane lands on the runway with a velocity of 50 m/s and decelerates at 10 m/s^2 to a velocity of 20 m/s. Calculate the distance travelled on the runway.


A cylindrical rod of radius 7mm and Young’s Modulus 70 GPa has a weight F applied to it. The material experiences a strain of 0.2%. What force has been applied?


Explain the difference between forced vibration and resonance in an oscillating object.


What are the main differences between magnetic and electric fields?