A bar magnet of length ‘l’ and magnetic dipole moment ‘M’ is bent in the form of an arc as
shown in figure. The new magnetic dipole moment will be :
A loop carrying current I lies in the xβy plane as shown in the figure. The unit vector Λk is coming out of the plane of the paper. The magnetic moment of the current loop is :
As shown in the figure, the radius of each of quarter circular arc is 2m. Find the magnetic moment of the given loop for the current in the loop :
Find out magnetic dipole moment of given current loop.
In the given diagram, ratio of magnetic field at point A and B will be :
In the given diagram a rod is rotating with angular velocity Ο. Mass of this rod is m, charge q, and length is l then find out magnetic moment of this rod :
A current carrying loop is placed in a uniform magnetic field in four different orientations, I, II, III & IV arrange them in the decreasing order of potential Energy :
Two bar magnets with magnetic moments 2M and M are fastened together at right angles to each other at their centres to form a crossed system, which can rotate freely about a vertical axis through the centre. The crossed system sets in earth’s magnetic field with magnet having magnetic moment 2M making and angle ΞΈ with the magnetic meridian such that :
Time period for a magnet is T. If it is divided in four equal parts along its axis and perpendicular to its axis as shown then time period for each part will be :
