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Question

A radio receiver antenna that is 2 m long is oriented along the direction of the electromagnetic wave and receives a signal of intensity 5× 1016 W/m2. The maximum instantaneous potential difference across the two ends of the antenna is



Correct Answer
A
1.23 mV
Your Answer
B
1.23 mV
Your Answer
C
1.23 V
Your Answer
D
12.3 mV

Solution

The correct option is B 1.23 mV

I=12 ϵ0CE20

 E0=2Iϵ0C=2× 5× 10168.85=0.61× 106Vm

Alsop E0=V0d V0=E0d=0.61× 106× 2=1.23μ V

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