An electron moving with uniform velocities in x-direction enters a region of uniform magnetic field along y-axis direction . which of the following quantities are non zero and remain constant .
I)Velocity of the electron
II) Magnitude of momentum of the electron
III) Force on the electron
IV)the kinetic energy of electron
Answers
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HERE YOUR SOLUTION
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As velocity and force both are vector quantity therefore both the quantities changes because there is change in their direction (electron get deflected when it enters into the magnetic field) but magnitude of momentum and kinetic energy of electron remain constant because the speed which is a scalar quantity is constant.
The Correct Answer is
Only II and IV
THANKYOU
BEST OF LUCK
CHEERS
FRIEND...
THANKYOU YOU ASKING QUESTION IN BRAINLY SITE..
============================
HERE YOUR SOLUTION
============================
As velocity and force both are vector quantity therefore both the quantities changes because there is change in their direction (electron get deflected when it enters into the magnetic field) but magnitude of momentum and kinetic energy of electron remain constant because the speed which is a scalar quantity is constant.
The Correct Answer is
Only II and IV
THANKYOU
BEST OF LUCK
CHEERS
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