The mano energetic beams of electrons moving along +y direction enter a region of uniform electric and magnetic fields. If the beam goes straight through these simultaneously then field B and E are directed respectively along.
Answers
Force of monoenergetic beam of electrons due to magnetic field =
V
×
B
B = magnetic field
V = velocity of electrons
and force is perpendicular to magnetic field direction
Force due to electric field=q
ϵ
q=magnitude of charge
ϵ
= electric field
direction of force due to electric field is parallel to velocity of beam.
If beam of electrons pass straight it means no force due to magnetic field that implies magnetic field and velocity are parallel and electric field also parallel to electrons.
Direction of magnetic field = y axis
Direction of electric field = y axis
Only then it is possible when beam of electrons went straight.
December 27, 2019
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hope it helps you pls mark me as brainlist answer I will help u whenever u need help I m a teacher and the answer is correct