Moving Charges ...

A charged particle moving in a magnetic field experiences, some magnetic force because

Motion of charges is noting but :

If a proton enters perpendicularly a magnetic field with velocity v, then time period of revolution is T. If proton enters with velocity $$2$$v, then time period will be?

A conductor of length $$1\ m$$ and carrying current of $$1\ A$$ is placed at an angle $$45 ^ { \circ }$$ to the magnetic field of 1 oersted. The force acting on conductor is 

A charged particle enters in a magnetic field $$H$$ with its initial velocity making an angle of $$45^o$$ with $$H$$. The path of the particle will be 

The magnitude of net magnetic force on wire frame as shown below is ( the frame is kept in a perpendicular magnetic field $$ \bar B $$)

A proton and an alpha particle enter the same magnetic field which is perpendicular to their velocity. If they have same kinetic energy then ratio of radii of their circular path is 

An electron moving along a horizontal line with respect to the observer and towards the north. Due to each magnetic field, it deflects towards the east then position observer:-

There are a number of hydrogen like atoms is free space. Initially all the atoms are stationary and in a particular excited level $$A$$. They undergo transitions from the initial level $$A$$ to the ground state. The recoiling atom enters a region of constant magnetic field. If the radii of the paths of the recoiling atoms is observed to have only three different values, then

A stationary magnet does not interact with