Magnetism Questions

A particle of mass M and positive charge Q, moving with a constant velocity , enters a region of uniform static magnetic field normal to the x-y plane. The region of the magnetic field extends from x ...

The magnetic field due to a straight conductor of uniform cross-section of radius a and carrying a steady current is represented by :

The cyclotron frequency of an electrons gyrating in a magnetic field of 1 T is approximately :

A proton and an α-particle, moving with the same velocity, enter a uniform magnetic field, acting normal to the plan of their motion. the ratio of the radii of the circular paths described by the...

In a mass spectrometer used for measuring the masses of ions, the ions are initially accelerated by an electric potential V and then made to describe semicircular paths of radius R using a magnetic fi...

Electron of mass m and charge q is travelling with a speed along a circular path of radius r at right angles to a uniform magnetic field of intesity B. if the speed of the electron is doubled and the ...

Electron moves at right angles to a magnetic field of 1.5 × 10-2 tesla with speed of 6 × 107 m/s. If the specific cahrge of the electron is 1.7 × 1011 C/kg. The radius of circular path ...

Which of the following conclusion can be drawn from the result

A charged particle is released from rest in a region of uniform electric and magnetic fields which are parallel to each other. the particle will move on a:

Find the magnetic dipole moment of the rectangular loop shown in the figure. Sides, a = 3m, b = 4m and c = 2m, current in the loop I = 1 Amp...

A particle with charge q and mass m starts its motion from origin with a velocity . A uniform magnetic field exists everywhere in space. The component of velocity vector in y-direction when the value ...

A particle of mass m and charge q is thrown origin at t = 0 with velocity 2î + 3ĵ + 4 units in a region with uniform magnetic field 2î units. After time t = , an electric file is switch...

A steady current is set up in a cubic network composed of wires of equal resistance and length d as shown in figure. What is the magnetic field at the centre P due to the cubic network ?...

All straight wires are very long. Both AB and CD are arcs of the same circle, both sub tending right angles at the centre O. Then the magnetic field at O is -...

Current flows through uniform,square frames as shown. In which case is the magnetic field at the centre of the frame not zero ?

A conductor PQ carries a current ′i′ is placed perpendicular to a long conductor XY carrying a current I. The direction of force on PQ will be : -...

A circular current loop of radius a is placed in a radial field B as shown. The net force acting on the loop is

A wire PQRST carrying current I = 5A is placed in uniform magnetic field B = 2T as shown in fig. If the length of part QR = 4 cm and SR = 6 cm then the magnetic force on SR edge of the wire is : -...

A conducting rod of length l and mass m is moving down a smooth inclined plane of inclination θ with constant velocity v in fig. A current I is flowing in the conductor in a direction perpendicul...

The unit of electric current ′Ampere′ is the amount of current flowing through each of two parallel wire 1m. apart and of infinite length will give rise to a force between them equal to : ...