Electromagnetism

Step 1: State the relationship between the amplitudes of electric and magnetic fields in an electromagnetic wave. In a vacuum (or air, approximately), the magnitudes of the electric field ( ) and magnetic field ( ) at any instant are related by: where is the speed of light. This relationship also holds for their maximum values (amplitudes), and .

Step 2: Identify the maximum magnetic field ( ) from the given equation. The equation for the magnetic field is given in the form . By comparing, we can see that the amplitude (maximum value) of the magnetic field is T.

Step 3: Calculate the maximum electric field ( ). Use the value of the speed of light, m/s.