Suppose one has an excellent radio capable of detecting a signal as weak as 10^–14 W/m². This radio has a 2000-turn coil antenna having a radius of 1 cm wound on an iron core that increases the magnetic field by a factor of 200. The radio frequency is 140 KHz.

(a) What is the amplitude of the magnetic field in this wave?

(b) What is the emf induced in the antenna?

(c) What would be the emf induced in a 2-m wire oriented in the direction of the electric field?