The intensity $\text { I }$ of an electromagnetic wave (having electric field $E$ ) is proportional to
A) $E$
B) $\sqrt { E }$
C) $E ^ { 2 }$
D) $E ^ { 4 }$

Name: The intensity $\text { I }$ of an electromagnetic wave (having electric field $E$ ) is proportional to A) $E$ B) $\sqrt { E }$ C) $E ^ { 2 }$ D) $E ^ { 4 }$
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Question

Quizplus · Accepted Answer

The intensity of an electromagnetic wave is proportional to the square of its electric field amplitude, hence $I \propto E^2$.

The Intensity I \text { I } I Of an Electromagnetic Wave (Having Electric Field

The Intensity $\text { I }$ Of an Electromagnetic Wave (Having Electric Field