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Grade: 11
        
an electron has a circular path of radius 0.01m in a perpendicular magnetic induction 10-3  .find the speed of the electron.
5 months ago

Answers : (1)

Arun
11430 Points
							
Dear Student
 
Force due to magnetic field = Bqv
Centripetal Force = mv²/r

Centripetal Force is provided by magnetic field.
So,
Force due to magnetic field = Centripetal Force
Bqv = mv² / r
v = Bqr / m
= (10^-3 T × 1.6 × 10^-19 C × 0.01 m) / (9.1 × 10^-31 kg)
= 1.76 × 10^6 m/s

Speed of electron is 1.76 × 10^6 m/s
 
 
Regards
Arun (askIITians forum expert)
5 months ago
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