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aditya kulkarni Grade: 10
        if an electron is not deflected in passing through a certain space,can we be sure that there is no magnetic feild in that region?
6 years ago

Answers : (2)

AKASH GOYAL AskiitiansExpert-IITD
419 Points
										

Dear Aditya


Deflection depends on VXB.So if v and b are in same direction then electron will go undeflected even if there is magnetic field(B).


All the best.


AKASH GOYAL


AskiitiansExpert-IITD


 


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6 years ago
vikas askiitian expert
510 Points
										

no we can not say that there is no magnetic feild....


take a example in which electron is passing through a region where, magnetic field and electric field exist ,both are perpendicular to each other as well as to velocity of particle...


 v is the velocity of moving electron then


force due to  electric field is Fe = Eq


 Force due to magnetic field is q(vBsin@) or qvB                      (sin90 =1)


  if electron is not deflected then total force acting must be zero


          qvB=qE


           v=E/B....1


that means if there is magnetic field then electron is not deviated but this condition 1 should be fulfilled....


 

6 years ago
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