A beam of electrons is moving with constant velocity in a region having electric and magnetic fields of strength 20 Vm-1 and 0.5T at right angles to the direction of motion of the electrons. What is the velocity of the electrons?
A. 20 m/s
B. 40 m/s
C. 8 m/s
D. 5.5 m/s
Answer:B
A beam of electrons is moving with constant velocity in a region having electric and magnetic fields of strength 20 Vm-1 and 0.5T at right angles to the direction of motion of the electrons. What is the velocity of the electrons?
A. 20 m/s B. 40 m/s C. 8 m/s D. 5.5 m/s