a electrons beam is moving horizontally from south to north in the vertical component of the earth magnetic field directed - Science - Magnetic Effects of Electric Current

Question

a electrons beam is moving horizontally from south to north in the
vertical component of the earth magnetic field directed downward in
which dieecrion will the beam be deflected

Decoder_2 · Accepted Answer

Dear
student,

Applying right-hand rule for the cross product of vectors, we find
that the direction of 
v 
x 
B 
is towards east

Since,
F=-e(v×B)
therefore, the
beam will be deflected towards opposite to east as given by the
formula
So the beam will be deflected towards west

Regards

a electrons beam is moving horizontally from south to north in the vertical component of the earth magnetic field directed downward .in which dieecrion will the beam be deflected