Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich outcome occurs when metallic iron nanoparticles agglomerate in a microwave?
A)Localized superheating and plasma formation✓
B)Uniform temperature distribution established quickly
C)Dielectric breakdown and material quenching
D)Resonant frequency shift in microwave source
💡 Explanation
Localized superheating occurs because **dipolar polarization** of the nanoparticles causes rapid re-orientation with the oscillating electric field. This generates intense heat at contact points and plasma locally, rather than a smooth distribution, therefore plasma formation is expected, rather than uniform heating.
🏆 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 electrical surge risk increases when a submarine antenna receives a powerful electromagnetic pulse (EMP) wave?
- Which mechanism causes progressive weakening when steel alloy is repeatedly cooled and heated through its curie temperature?
- Which consequence results when unpolarized light encounters a chiral molecule?
- Which outcome results when an extreme gravitational field curves spacetime near a black hole?
- Which outcome occurs when the Brillouin zone edge narrows?
- Which mechanism limits efficiency when designing a thermoelectric generator using bismuth telluride near room temperature?
