How do the vibrating electric and magnetic fields around the charge become a wave that travels through space?

How do you find the direction of a magnetic field lines?

How is a magnetic field characterized?

A plane electromagnetic wave travels in vaccum along z-direction . What can you say about the directions of its electric and magnetic field vectors ? If the frequency of the wave is 30 MHz. What is its wavelength ?

Draw the magnetic field lines to form around of the bar magnet?

Which of the following is/are the property/properties of a monochromatic electromagnetic wave propagating in the free space? 1. Electric and magnetic fields will have a phase difference pi/2. 2. The energy of the wave is distributed equally between electric and magnetic fields. 3. The pressure exerted by the wave is the product of its speed and energy density. 4. The speed of the wave is equal to the ratio of the magnetic field to the electric field