An uniform beam of positivley charged particles is moving with a constant velocity parallel to another beam velocity in opposite direction separated by a distance d the variation of magnetic field B along a perpendicular line draw between the two beams is best represented by

To a charged particle which is moving with a constant initial velocity vecV, uniform magnetic field is applied in the direction of the velocity

What is the path of a charged particle moving in a uniform magnetic field with initial velocity (i) parallel to the field? (ii) perpendicular to the field? (iii) at some angle with the direction of magnetic field.

An electric charge e moves with a constant velocity v parallel to the lines of force of a uniform magnetic field B, the force experienced by the charge is:

A charged particle is moving on circular path with velocityv in a uniform magnetic field B, if the velocity of the charged particle is doubled and strength of magnetic field is halved, then radius becomes

A charged particle is moving on circular path with velocityv in a uniform magnetic field B, if the velocity of the charged particle is doubled and strength of magnetic field is halved, then radius becomes

If a particle of charge q is moving with a velocity v in a direction opposite to the magnetic field B, then the force acting on the particle is.

An electric charge q is moving with a velocity v in the direction parallel to the magnetic field B. The magnetic force acting on the charge is

What is the direction of force acting on a charged particle q, moving with a velocity in a uniform magnetic field?

A long uniform cylindrical beam of radius R consists of positively charged particles each of charge q, mass m and velocity V along positive x direction. The axis of the beam is the x-axis. The beam is incident on a region having magnetic field in y-z plane. The magnetic field in the region is confined to 0lexleDeltax(Deltax "is small"). The field lines are circular in yz plane as shown. The magnitude of the field is given by B = B_(0) r where B_(0) is a constant and r is distance from the origin. Show that this magnetic field acts as a converging lens for the ion beam and obtain the expression for focal length. Neglect the divergence in the beam caused due to electromagnetic interaction of the charge particles.