The value of the magnetic field for a certain type of electromagnetic wave is 2.12 μT. What is the value of the electric field for that wave?
A)636 V/m
B)636 N/C
C)636 J/Cm
D)All of the answers given are correct.
E)None of the answers given are correct.

Question

Quizplus · Accepted Answer

The correct answer is D because all of the answers given are correct. The value of the electric field for an electromagnetic wave is related to the value of the magnetic field by the following equation:E = cBwhere:E is the electric field in volts per meter (V/m)c is the speed of light in meters per second (m/s)B is the magnetic field in teslas (T)In this case, the value of the magnetic field is 2.12 μT, which is equal to 2.12 × 10^-6 T. The speed of light is approximately 3 × 10^8 m/s. Therefore, the value of the electric field is:E = (3 × 10^8 m/s) × (2.12 × 10^-6 T) = 636 V/mThis is equivalent to 636 N/C or 636 J/Cm.

The Value of the Magnetic Field for a Certain Type