Which outcome occurs when radio frequency electromagnetic fields exceed dielectric strength in air?

💡 Explanation

When strong RF electromagnetic fields exceed air's dielectric strength, high electron kinetic energy causes impact ionization because electrons collide with neutral molecules, leading to formation of plasma and visible corona discharge. Therefore corona discharge and ionization result, rather than ozone depletion, reflection increase, or reduced attenuation which require other conditions.

• Which outcome occurs when a polycrystalline silicon's grain boundaries hinder electron flow?
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