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Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismMagnetic ForceEasy2 minPYQ_2020

PhysicsEasysingle choice

An electron having kinetic energy $10 eV$ is circulating in a path of radius $0.1 m$ in an external magnetic field of intensity $10^{- 4} T$ . The speed of the electron will be

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Answer:

Solution:

When charge enters into a perpendicular magnetic field, it starts to move in a circular path.
Radius of a circular path followed by a charge particle:
$r = \frac{m V}{q B}$
$V =$ $1.76 \times (10^{6}) m s^{- 1}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:MagnetismSubtopic:Magnetic Force

⏱ 2mℹ️ Source: PYQ_2020

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