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The motion of an electron in presence of...


The motion of an electron in presence of a magnetic field is depicted in the figure. Force acting on the electron will be directed

A

into the page

B

out of the page

C

opposite to the motion of the electron

D

along the motion of the electron

Text Solution

Verified by Experts

The correct Answer is:
B
`vec(F)=qvec(v)xxvec(B)`
The disection of force is perpendicular to the direction of mangnetic field and current as given by Fleming's left hand rule. The direction of current is opposite to the direction of motion of electrones. Hence the force is directed out of the page.
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