physics

posted by .

In a given electromagnetic plane wave the maximumelectric field strength is 400
V/m.
What is the maximum magnetic field strength? How does the energy stored
in the magnetic field compare with the energy stored in the electric field at
any given time?
how do you calculate the average intensity of the wave.
and how do you calculate the average energy density of the wave.

  • physics -

    You have to have a nice summary in your electromagnetic energy chapter that summarizes this, look in the section of your text that discusses Poynting flux, or Poynting vector.

    Isn't E^2=B^2 ? That is, half the energy is in the electric field and half in the magnetic field?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Electric currents and magnetic fields

    Within a material, what results in the conversion of an electron's energy to thermal energy and electromagnetical energy?
  2. physics

    A laser emits 1.44*10^18 photons per second in a beam of light that has a diameter of 1.98 mm and a wavelength of 524.5 nm. (a) Determine the average electric field strength (b) Determine the average magnetic field strength for the …
  3. Physics

    Gold ions (Au+) are accelerate to high speeds using electric fields. These ions are then passed through a region where uniform electric E and magnetic B fields are present. If the ions are traveling to the right, which configuration …
  4. physics - speed of electron in magnetic field

    A beam of electron is accelerated by a potential difference of 2.5okV. The electrons are then allowed to pass into a magnetic field of strength 10.0mT. As the electrons enter the field, the direction of the velocity is at right angles …
  5. physics

    A thin 2.82 m long copper rod in a uniform magnetic field has a mass of 44.2 g. When the rod carries a current of 0.238 A, it floats in the magnetic field. The acceleration of gravity is 9.81 m/s2 . What is the field strength of the …
  6. PHYSICS

    A thin 2.82 m long copper rod in a uniform magnetic field has a mass of 44.2 g. When the rod carries a current of 0.238 A, it floats in the magnetic field. The acceleration of gravity is 9.81 m/s2 . What is the field strength of the …
  7. physics

    An electromagnetic wave has an electric field strength of 145 V/m at a point P in space at time t. (a) What is the electric field energy density at P?
  8. physics

    A laser emits 1.42 1018 photons per second in a beam of light that has a diameter of 1.82 mm and a wavelength of 524.0 nm. Determine each of the following for the electromagnetic wave that constitutes the beam. (a) the average electric …
  9. Physics

    A thin, 8.3 m long copper rod in a uniform magnetic field has a mass of 68 g. When the rod carries a current of .343 A, it floats in the magnetic field. What is the field strength of the magnetic field?
  10. Physics Magnetic Field

    In an experiment on the shuttle, an electron with a speed of 6.3 x 105 m/s [N] and a mass of 9.11 x 10-31 kg is shot through an external magnetic field. Determine the strength and orientation of the magnetic field required so that …

More Similar Questions