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Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismMagnetic ForceEasy2 minPYQ_2020
PhysicsEasysingle choice

An electron is constrained to move along they-axis with a speed of0.1 c(c is the speed of light) in the presence of electromagnetic wave, whose electric field isE=30j^sin1.5×107t-5×10-2x V m-1.wheretin in seconds andxis im meters.The maximum magnetic force experienced by the electron will be: (givenc=3×108 m s-1and electron charge=1.6×10-19 Coloumbs

Options:

Answer:
C
Solution:

In electromagnetic wave is E0B0=C
so maximum value of magnetic field is

B0=E0C

Fmax=qVBmax·sin90°

=qV0E0C N

1.6×10-19×0.1×3×108×303×108=4.8×10-19 N

Stream:JEESubject:PhysicsTopic:MagnetismSubtopic:Magnetic Force
2mℹ️ Source: PYQ_2020

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