Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich outcome occurs when an AM radio tower broadcasts?
A)Electromagnetic wave propagates outwards✓
B)Capacitance decreases in antenna feed
C)Signal attenuation lowers transmitter impedance
D)Resonance enhances modulation bandwidth
💡 Explanation
Electromagnetic induction generates a radio wave because oscillating current in the antenna creates propagating fields. Therefore, a wave emits from the tower, rather than changes to impedance, resonance or capacitance since impedance is a resistance, not direct propagation.
🏆 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 increases RF noise floor when PCB trace impedance mismatch?
- Which effect commonly arises when placing a magnetic field near a superconducting quantum interference device (SQUID)?
- Which outcome occurs when a catalytic converter operates below its light-off temperature?
- Which risk increases when RF heating raises temperature within a high-voltage capacitor?
- In the Fresnel biprism experiment, which mechanism modulates fringe spacing?
- Which flow regime develops when inertial forces dominate?
