A current carrying coil is subjected to a uniform magnetic field. The coil will orient so that its plane becomes
inclined at 45o to the magnetic field
inclined at any arbitrary angle to the magnetic field
parallel to the magnetic field
perpendicular to magnetic field
The total charge induced in a conducting loop when it is moved in magnetic field depends on :
the rate of change of magnetic flux
initial magnetic flux only
the total change in magnetic flux
final magnetic flux only
At what distance from a long straight wire carrying a current of 12 A will the magnetic field be equal to 3 x 10-5 Wb/m2?
8 × 10-2 m
12 × 10-2 m
18 × 10-2 m
24 × 10-2 m
A neutron of kinetic energy 50 keV is describing a circular orbit of radius 0.5 m in a plane perpendicular to magnetic field B. The kinetic energy of the proton that describes a circular orbit of radius 0.5 m in the same plane with the same B is
25 keV
50 keV
200 keV
100 keV
A charged particle of charge q and mass m enters perpendicularly in a magnetic field Kinetic energy of the particle is E, then frequency of rotation will be :
qB/m π
qB/2 πm
qBE/2 πm
qB/2 πE
The magnetic field at a distance r from a long wire carrying current I is 0.4 T. The magnetic field at a distance 2r is :
0.2 T
0.8 T
0.1 T
1.6 T
Tesla is the unit of :
magnetic flux
magnetic field
magnetic induction
magnetic moment
A charge moving with velocity v in X-direction is subjected to a field of magnetic induction in negative X – direction . As a result, the charge will :
remain unaffected
start moving in a circular Y – Z plane
retard along X – axis
moving along a helical path around X – axis
A 10 eV electron is circulating in a plane at right angles to a uniform field of magnetic induction 10-4 Wb/m2 ( =1.0 gauss). The orbital radius of the electron is :
12 cm
16 cm
11 cm
18 cm
A positively charged particle moving due east enters a region of uniform magnetic field directed vertically upwards. The particle will
continue to move due east
move in a circular orbit with its speed unchanged
move in a circular orbit with its speed increased
gets deflected vertically upwards