Questions
A plane electromagnetic wave of frequency 25 MHz travels in free space along the x-direction. At a particular point in space and time, electric field is . Strength of the magnetic field at this point
detailed solution
Correct option is B
GivenFrequency of electro magnetic wave=25 MHz=25×106 HzElectric field E→=6.3j^ V/mc=EB ⇒B=Ec=6.33×108=2.1×10−8 TAlso velocity of EMW is along E→×B→, so direction of magnetic field is given by v→×E→ = i^×j^=k^Talk to our academic expert!
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The transmitting antenna of a radio-station is mounted vertically. At a point 10 km due north of the transmitter the peak electric field is 10-3 V/m. The amplitude of the radiated magnetic field is
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