At a particular instant, a proton moves Eastward in a uniform magnetic field tha

Question

At a particular instant, a proton moves Eastward in a uniform magnetic field that's that is directed straight downward. The magnetic force acts on it is? A) directed upward B) Northward C) westward D) to the south E) zero
PLEASE TELL WHY THAT OPTION IS CORRECT
THANKS At a particular instant, a proton moves Eastward in a uniform magnetic field that's that is directed straight downward. The magnetic force acts on it is? A) directed upward B) Northward C) westward D) to the south E) zero
PLEASE TELL WHY THAT OPTION IS CORRECT
THANKS A) directed upward B) Northward C) westward D) to the south E) zero
PLEASE TELL WHY THAT OPTION IS CORRECT
THANKS

Explanation / Answer

correct option is,Northward

because,

force F=q(VXB)

drection of v is Eastward

B direction is down ward

here,

by using Fleming left hand rule the magnetic force is perpendicular both v and B

which is Northward direction

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