Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich outcome occurs when electrons exceed gallium arsenide threshold velocity?
A)Gunn diode negative differential resistance✓
B)Stable high-frequency linear amplification
C)Increased electron-hole plasma recombination
D)Material reaches superconductivity transition stage
💡 Explanation
Negative differential resistance happens because of the Gunn–Hilsum effect; electrons transfer to a higher energy but lower mobility satellite valley. Because the increased scattering causes reduced current, therefore the Gunn diode exhibits negative resistance, rather than behaving as normal resistor.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Science →- Which outcome occurs when applying strong magnetic field gradients during diffusion-weighted MRI?
- Which limit most severely truncates inertially confined fusion energy yields?
- Which outcome occurs when dopant concentration significantly raises semiconductor electron density?
- Which mechanism alters electron mobility near the graphene oxide gap?
- Which risk increases when a signal propagates through lossy dielectric?
- Which outcome results when Reynolds number bypasses a heat exchanger's design limits?
