Question

25. An electron (q = 1.6 x 10-19c) is moving
at night angle to the uniform magnetic field
3.534x10-51. The time taken by the electron to
complete a circular orbit is
1) 2 us
2) 4us
3) 3us
4) 1us​

Answer 1

Answer:

Explanation:

T=  

qB

2πm

​

=  

1.6×10  

−19

×3.534×10  

−5

 

2×3.14×9.1×10  

−31

 

​

 

=1×10  

−6

sec=1 μsec

Answer 2

T=2​πm/qB

 = 2×3.14×9.1×10−31 / 1.6×10 -19×3.534x10-5

 =1×10−6sec

 =1 μsec

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