The wavelength of an electromagnetic wave is measured to be 200 m. (a) What is the frequency of the wave? kHz (b) What type of EM wave is it? O radio microwave infrared visible light ultraviolet
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- How does the intensity of an electromagnetic wave depend on its electric field? O It is proportional to the time average of the electric field strength squared O It is proportional to the time average of the electric field strength O It does not depend on the electric field It is proportional to the instantaneous electric field strengthElectromagnetic radiation is: A form of energy consisting of constant electric and magnetic fields. A form of energy consisting of fluctuating electric fields. A form of energy consisting of fluctuating electric and magnetic fields. A form of energy consisting of constant electric fields. A form of energy consisting of fluctuating magnetic fieldsWhat is the wavelength (in nm) of an electromagnetic wave of frequency 11x1014 Hz? 143 347 O 310 O 394 272
- We consider an electromagnetic wave with peak magnetic field strength Bo projected on an area A. How will the power be affected if Bo is tripled and the area is divided by 3? the power will be multiplied by a factor 9 O there is not enough information to determine how the power will be affected O the power will stay constant O the power will be divided by 3 O the power will be tripledHow is the potential energy associated with an electromagnetic wave shared between the electric and magnetic fields? O there is no potential energy associated with an electromagnetic wave more of the energy is in the electric field it is equally shared between them O more of the energy is in the magnetic fieldThe wavelength of an electromagnetic wave is measured to be 1.60 x 10-7 m. (a) What is the frequency of the wave? ___________ kHz(b) What type of EM wave is it? radiomicrowave infrared visible light ultraviolet
- Which of the following lists correctly shows the regions of the electromagnetic spectrum in order of increasing frequency? a Radio waves, infrared, microwaves, visible, ultraviolet, X-rays, gamma rays b Radio waves, infrared, microwaves, visible, ultraviolet, gamma rays, X-rays c Radio waves, microwaves, infrared, visible, ultraviolet, X-rays, gamma rays d Radio waves, infrared, microwaves, ultraviolet, visible, X-rays, gamma rays#3: A certain 60.0 Hz AC power line radiates an electromagnetic wave having a maximum electric field strength of 13.0 kV/m. A) what is the wavelength of this very low frequency EM wave? B) What is its maximum magnetic field strength?