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× 10−16 W/m2. The maximum instantaneous potential difference across the two ends of the antenna is
I=12 ϵ0CE20
⇒ E0=√2Iϵ0C=√2× 5× 10−168.85=0.61× 10−6Vm
Alsop E0=V0d⇒ V0=E0d=0.61× 10−6× 2=1.23μ V