A uniform magnetic field acts right angles to the direction of motion of electrones. As a result, the electron moves in acircular path of radius 2 cm. If the speed of electrons is doubled, then the radius of the circular path will be

A uniform magnetic field at right angles to the direction of motion of electron . As a result , the electron moves in circular parth of radius 2 cm . If the speed of electron is doubles , then the radius of the circular path will be

A proton describes a circular path of radius 5 cm in a transerve magnetic field. If the speed of the proton is doubled, then the radius of the circular path will be

Electrons accelerated by a potential differnece V enter a uniform magnetic field of flux density B at right angles to the field. They describe a circular path of radius 'r' . If now 'V' is doubled and B is also doubled, the radius of the new circular path is

An electron is moving in a circle of radius r in a uniform magnetic field B. Suddenly the field is reduced to B/2 . The radius of the circular path now becomes.

An electron is moving on a circular path of radius r with speed v in a transverse magnetic field B. e/m for it will be

An electron is moving on a circular path of radius r with speed v in a transverse magnetic field B. e/m for it will be

When a beam of electrons passes through an electrostatic field of 300 V cm^(-1) at right angles to the direction of field, it describes a circular path of radius 8 cm . On entering the magnetic field of 15 oersted at right angles to the electrostatic field, the beam remains undeflected. Find specific charge of the electron.

An electron of energy 150ev describe a circular path in a magnetic field of 1 T. Calculate the radius of circle.