Solution Found!
If the rms value of the electric field in an
Chapter 25, Problem 43P(choose chapter or problem)
Problem 43P
If the rms value of the electric field in an electromagnetic wave is doubled, (a) by what factor does the rms value of the magnetic field change? (b) By what factor does the average intensity of the wave change?
Questions & Answers
QUESTION:
Problem 43P
If the rms value of the electric field in an electromagnetic wave is doubled, (a) by what factor does the rms value of the magnetic field change? (b) By what factor does the average intensity of the wave change?
ANSWER:
Step 1 of 2
(a) We know that the electric and magnetic fields in an electromagnetic field are proportional to one another.
So if we double the rms value of the electric field, the rms value of the magnetic field will also double, that is the rms value of the magnetic field changes by a multiplicative factor of 2.