The emitting antenna of a \(50-\mathrm{kW}\) radio station radiates equally in all directions. What are the magnitudes \(E_{\max }\) and \(B_{\max }\)

(a) \(200 \mathrm{~m}\) from the antenna and

(b) \(20 \mathrm{~km}\) from the antenna?

(c) For these two distances from the antenna, calculate the maximum potential difference caused between the ends of a receiving antenna that is \(0.5 \mathrm{~m}\) long, assuming the antenna is aligned perfectly with the electric field of the radio wave.