1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# An electron having mass 9.1×10−31 kg, charge 1.6×10−19C and moving with the velocity of 106 m/s enters a region where magnetic field exists. If it describes a circle of radius 0.2m then the intensity of magnetic field must be ___________×10−5T.

A
14.4
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
5.65
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
2.84
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
1.32
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

## The correct option is A 2.84Given : m=9.1×10−31 kg e=1.6×10−19 C v=106 m/s Radius of circular path r=0.2 mIntensity of magnetic field B=mver⟹ B=9.1×10−31×1061.6×10−19×0.2=2.84×10−5 TCorrect answer is option C.

Suggest Corrections
0
Join BYJU'S Learning Program
Related Videos
Materials Kept in Magnetic Field
PHYSICS
Watch in App
Explore more
Join BYJU'S Learning Program