A beam of electrons is moving with constant velocity in a region having electric and magnetic fields of strength 
and 0.5 T at right angles to the direction of motion of the electrons. What is the velocity of the electrons
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Electric field 
and magnetic field 
.
The force on electron in a magnetic field 
Force on electron on an electric field 
Since the electron is moving with constant velocity, therefore the resultant force on electron is zero.
i.e 
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