Name: Note: For full credit you should show all the steps of your numerical answ

Question

Name: Note: For full credit you should show all the steps of your numerical answers No credit is gained by just circling the numerical answers I. Which one of the following will not generate electromagnetic waves or pulses? A) an accelerating electron B) a proton in simple harmonic motion C) a steady direct current D) an alternating current E) charged particles traveling in a circular path in a mass spectrometer 2. An FM radio station generates radio waves that have a frequency of 108.6 MHz. The frequency of the waves from a competing station has a frequency of 107.5 MHz. What is the difference in wavelength between the waves emitted from the two stations? A) 0.009 m B) 0.018 m C) 0.028 m D) 0.033 m E) 0.045 m 3. A laser uniformly illuminates an area with green light that has an average intensity of 580 W/m What is the rms value of the magnetic field of this light? A) 0.23 x 10- T B) 1.13 x 106T C) 1.56 x 106 T E) 1.66 x 10-6 T D) 1.74 x 10-6 T 4. An AM radio station broadcasts radio waves uniformly in all directions with a total average power of 100 kW. What is the maximum value of the electric field at a distance of 350 miles from the station transmitter antenna?( kW 1000 W, 1 mile-1 609 m) A) 8.2 x 10-S N/C B) 5.2 x 10-4 N/C C) 4.3 x 10-3 NIC D) 1.6 x 10 N/C E) zero tesla

Explanation / Answer

Since you didn't mentioned which question you want to be answered I am answering the first one

so doing analysis of each option one by one we have Correct Option as C

A) Acceleration electron: Accelerating charge particle always emit electromagnetic waves so it wil generate electomagnetic wave

B) A proton performing SHM will accelerate there for will generate EM wave

C) Here Magnetic field will be generated but since charge particles are not acceleration( i.e are in steady motion) there fore no electronic wave will be generated. Option C is correct

D)Alternating current will generate EM waves as particles will be accelerating all the time

E)In circular path charged particles are accelerating therefore generating EM waves

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