Lesson: Electric and Magnetic Fields in Electromagnetic WavesPhysics
In this lesson, we will learn how to model the relationship between the magnitude changes with time of magnetic and electric fields in electromagnetic waves.
Sample Question Videos
A radio transmitter broadcasts plane electromagnetic waves whose electric field amplitude at a particular location is V/m. What is the amplitude of the electromagnetic wave’s magnetic field at that location?
A plane electromagnetic wave travels northward. At one instant, its electric field has a magnitude of 6.0 V/m and points eastward. What is the magnitude of the magnetic field at this instant?
A certain 60.0 Hz ac power line radiates an electromagnetic wave having a maximum electric field strength of 13.0 kV/m. Take the speed of light to be m/s.
What is the wavelength of this very-low-frequency electromagnetic wave?
What is the magnitude of the strongest magnetic field present in this wave?