Loading the lesson
Loading the lesson
Search AllRounder.ai
Search the courses, subjects, tracks, games and features, or jump straight to a page.
Search the courses, subjects, tracks, games and features, or jump straight to a page.
4 cards from this section. Quick, good the night before a test.
What is drift current?
Think of how cars move on a highway when there's a push.
What causes diffusion current?
It’s like a crowd dispersing from a packed party.
What is the primary cause of drift current?
Recall what propels charge carriers in a semiconductor.
True or False: Diffusion current occurs due to electric fields.
Think about what makes charge carriers move.
If a semiconductor has a drift current of 5 mA due to an electric field of 10 V/m and a mobility of 1500 cm²/(V·s), calculate the carrier concentration (n).
Remember to convert units consistently.
A semiconductor reaches equilibrium with both drift and diffusion currents. If the drift current is 3 mA and the diffusion current is 2 mA, what is the net current?
If currents are in the opposite direction, remember to subtract.
6 more questions in this section. Enroll free to practise them all.
Enroll free