Magnetic Effect of Electric Current MCQs – Test 2

A proton is projected with a uniform velocity ‘v’ along the axis of a current carrying solenoid, then [Karnataka CET 2016]

A proton beam enters a magnetic field of 10^–4 Wb m^–2 normally. If the specific charge of the proton is 10¹¹ C kg^–1 and its velocity is 10° ms^–1, then the radius of the circle described will be [Karnataka CET 2015]

A rectangular coil of length 0.12 m and width 0.1 m having 50 turns of wire is suspended vertically in a uniform magnetic field of strength 0.2 Weber/m². The coil carries a current of 2 A. If the plane of the coil is inclined at an angle of 30° with the direction of the field, the torque required to keep the coil in stable equilibrium will be [AIPMT 2015]

A proton and an alpha particle both enter a region of uniform magnetic field B, moving at right angles to the field B. If the radius of circular orbits for both the particles is equal and the kinetic energy acquired by proton is 1 MeV, the energy acquired by the alpha particle will be [AIPMT 2015]

In a region, steady and uniform electric and magnetic fields are present. These two fields are parallel to each other. A charged particle is released from rest in this region. The path of the particle will be a [AIEEE 2006]