An electron is moving along positive x-axis. To get it moving on an anticlockwise circular path in x-y plane, a magnetic filed is applied ____.
Along positive y-axis
Along positive z-axis
Along negative y-axis
Along negative z-axis
A moving charge will gain energy due to the application of ____.
Electric field
Magnetic field
Both A and B
None of the above
When a magnetic field is applied in a direction perpendicular to the direction of cathode rays, then their ____.
Energy decreases
Energy increases
Momentum increases
Momentum and energy remain unchanged
A charge moves in a circle perpendicular to a magnetic field. The time period of revolution is independent of ____.
Magnetic field
Charge
Mass of the particle
Velocity of the particle
An electron enters a region where magnetic (B) and electric (E) fields are mutually perpendicular to one another, then ____.
It will always move in the direction of B
It will always move in the direction of E
It always possess circular motion
It can go undeflected also
An electron and a proton with equal momentum enter perpendicularly into a uniform magnetic field, then ____.
The path of proton shall be more curved than that of electron
The path of proton shall be less curved than that of electron
Both are equally curved
Path of both is straight line
A positively charged particle moving due east enters a region of uniform magnetic field directed vertically upwards. The particle wills ____.
Get deflected vertically upwards
Move in a circular orbit with its speed increased
Move in a circular orbit with its speed unchanged
Continue to move due east
A particle is moving in a uniform magnetic field, then ____.
Its momentum changes but total energy remains the same
Both momentum and total energy remain the same
Both will change
Total energy changes but momentum remains the same
A charge q is moving in a magnetic field then the magnetic force does not depend upon ____.
Charge
Mass
Velocity
Magnetic field
An electron is travelling in east direction and a magnetic field is applied in upward direction then electron will deflect in ____.
South
North
West
East