EASY
NEET
IMPORTANT
Earn 100
Magnetic moment and angular momentum of an orbital electron are and respectively. The specific charge of the orbital electron:
50% studentsanswered this correctly
Important Questions on Magnetic Effect of Current
MEDIUM
NEET
IMPORTANT
A particle of charge and mass is moving in a circular orbit with angular speed ''. The ratio of its magnetic moment to that of its angular momentum depends on:-
EASY
NEET
IMPORTANT
Magnetic moment of orbital electron in first orbit is then magnetic moment of that electron in third orbit :-
HARD
NEET
IMPORTANT
A solenoid of radius and length has a current The value of induced electric field at a distance of outside the solenoid, is
EASY
NEET
IMPORTANT
A helium nucleus is moving in a circular path of radius 0.8m. If it takes 2 sec to complete one revolution. Magnetic field produced at the centre of the circle :-
EASY
NEET
IMPORTANT
A cell of an emf of, and internal resistance of is sending current through a tangent galvanometer of resistance, . If another external resistance of is introduced, the deflection of the galvanometer is, . The reduction factor of the galvanometer is:-
HARD
NEET
IMPORTANT
A stationary magnet does not interact with:-
MEDIUM
NEET
IMPORTANT
Following is a square shape loop, whose one arm BC produces a magnetic field at the center of the coil. The resultant magnetic field due to all the arms will be:-
EASY
NEET
IMPORTANT
A wire is parallel to one arm of a square current-carrying loop, which also carries current. Now at any point within the coil, the magnetic field will be:-
