Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismMagnetic ForceEasy2 minPYQ_2020
PhysicsEasysingle choice

A proton is moving perpendicular to a uniform magnetic field of2.5 Twith2 MeVkinetic energy. The force on proton (inN) is  (Mass of proton=1.6×10-27 kg,Charge of the proton=1.6×10-19C)

Options:

Answer:
A
Solution:

Force on moving charge in magnetic field

F=qvBsin⁡θ

Butθ=90

F=qvB

Hence velocityv= 2Em( E is the kinetic energy of proton)

Putting the values we get

F=8×10-12N

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:MagnetismSubtopic:Magnetic Force
⏱ 2mℹ️ Source: PYQ_2020

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