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Physics - EM Waves Question with Solution | TestHub

PhysicsEM WavesElectromagnetic wavesEasy2 minPYQ_2020

PhysicsEasysingle choice

The magnetic field in a travelling electromagnetic wave has a peak value of $20 nT$ . The peak value of electric field strength is

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Answer:

Solution:

From question, $B_{0} = 20 nT = 20 \times 10^{- 9} T$

$E_{0} = B_{0} C$

$E_{0} = 20 \times 10^{- 9} \times 3 \times 10^{8} = 6 V m^{- 1} .$

( $∵$ velocity of light in vacuum $C = 3 \times 10^{8} m s^{- 1}$ )

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:EM WavesSubtopic:Electromagnetic waves

⏱ 2mℹ️ Source: PYQ_2020

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