Recent content by ashleyd

  1. A

    Electromagnetic wave, intensity, electric field problem

    The value I got for S, without converting kV to V was 11687.5
  2. A

    Electromagnetic wave, intensity, electric field problem

    Homework Statement Instead of sending power by a 850 kV, 1100 A transmission line, one desires to beam this energy via an electromagnetic wave. The beam has uniform intensity within a cross-sectional area of 80 m2. The speed of light is 3×10^8 m/s and the permeability of free space is 4×10^-7...
  3. A

    Formula for the magnetic field inside a solenoid

    A 29.8 mA current is carried by a uniformly wound air-core solenoid with 390 turns. the length of the coil is 13.1 cm, with a diameter of 20.8mm. The permeability of free space is 1.25664 X 10^(-6) N/A^2 compute the magnetic field inside the solenoid. answer in units of T Relevant...