Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich effect results inside a semiconductor when impurities increase?
A)Smaller bandgap; increased conductance✓
B)Enhanced phonon scattering; heating
C)Increased dielectric strength; capacitance
D)Reduced electron mobility; saturation
💡 Explanation
Increased doping causes impurity band broadening, shrinking the bandgap, because the added states reduce the energy needed for electrons to jump to the conduction band; therefore conductance increases rather than decreases due to smaller barrier.
🏆 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 mechanism prevents complete saturation in ferromagnetic cores affected by high frequency signals?
- Which risk increases significantly inside an inadequately shielded HV capacitor bank?
- Which phenomenon dominates when a catalyst lowers activation energy, affecting equilibrium constants?
- Which mechanism causes backpressure in a refrigeration cycle operating near a compressor's surge limit?
- Which outcome results when inhibitors limit enzyme active sites?
- Which outcome occurs when exceeding the decomposition temperature of PMMA?
