A radio transmitter transmits 830kHz- At a certain distance from the transmitter magnetic field has amplitude 4-82times - 10 - -11 -T- Find the electric field and wavelength-14-46times - 10 - -3 -N- C - -1 -35m14-46times - 10 - -3 -N- C - -1 -361-4m1-45times - 10 - -3 -N- C - -1 -35mnone of these

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Toppr Admin · Accepted Answer

Using v-x3BD-x3BB- -xA0- where v is the speed of EM wave-As -xA0-v-c-3-xD7-108m-s-x27F9-3-xD7-108-830-xD7-103-x3BB-x27F9-x3BB-361-4mUsing -xA0- E-Bv-4-82-xD7-10-x2212-11-xD7-3-xD7-108-x27F9-E-14-46-xD7-10-x2212-3NC-x2212-1

A radio transmitter transmits at 830kHz. At a certain distance from the transmitter magnetic field has amplitude 4.82×10−11T. Find the electric field and wavelength.14.46×10−3NC−1,35m14.46×10−3NC−1,361.4m1.45×10−3NC−1,35mnone of these

Using v=νλ where v is the speed of EM wave.As v=c=3×108m/s⟹3×108=830×103λ⟹λ=361.4mUsing E=Bv=4.82×10−11×3×108⟹E=14.46×10−3NC−1

Using $v = ν λ$ where $v$ is the speed of EM wave.
As $v = c = 3 \times 10^{8} m / s$
$⟹ 3 \times 10^{8} = 830 \times 10^{3} λ$
$⟹ λ = 361.4 m$
Using $E = B v = 4.82 \times 10^{- 11} \times 3 \times 10^{8}$
$⟹ E = 14.46 \times 10^{- 3} N C^{- 1}$