Magnetic field due to currentHard
Question
An ionzed gas contains both positive and negative ions. If it is subjected simulaneously to an electric field along the +x-direction and a magnetic field along the +z-direction, then
Options
A.positive ions deflect towards +y- direction and negative ions towards - y-directions
B.all ions deflect towards +y- direction
C.all ions deflect towards - y- direction
D.positive ions deflect towards - y- direction and negative ions towards - y-directions
Solution
We can write 
and 
Velocity of the particle will be along q.
direction.
Therefore, we can write
= AqE
In
, 
and 
, A, E and B are positive constanmt while q can be positive or negative.
Now, magnetic force on the particle will be
= q2AEB
= q2AEB 
Since, is along negative y-axis, no matter what is the sign of charge q. Therefore, all ions will deflected towards negative y-direction.
and Velocity of the particle will be along q.
direction. Therefore, we can write
= AqEIn
, and , A, E and B are positive constanmt while q can be positive or negative.Now, magnetic force on the particle will be
= q2AEB
= q2AEB Since,
is along negative y-axis, no matter what is the sign of charge q. Therefore, all ions will deflected towards negative y-direction.Create a free account to view solution
View Solution FreeMore Magnetic field due to current Questions
A bar magnet of length 3 cm has points A and B along its axis at distances of 24 cm and 48 cm from centre on the opposit...At any place horizontal and vertical component of earth magnetic field are equal then angle of dip at that place :-...An α-particle and a proton are tired through the same magnetic fields which is perpendicular to their velocities . ...In a mass spectrograph an ion A of mass number 24 and charge +e and an ion B of mass number 22 and charge +2e are entere...Two similar coils of radius R are lying concentrically with their planes at right angles to each other. Thecurrents flow...