The given equation represents a magnetic field strength  in the spherical coordinate system, in free space. Here,  and  represent the unit vectors along  and , respectively. The value of  in the equation should be ________ (rounded off to the nearest integer).        

Which one of the following vector functions represents a magnetic field ? (, and  are unit vectors along x-axis, y-axis, and z-axis, respectively)

The following four vector fields are given in Cartesian co – ordinate system. The vector field which does not satisfy the property of magnetic flux density is

The flux density at a point in space is given by. The value of constant k must be equal to        

Which of the following statements holds for the divergence of electric and magnetic flux densities

Consider the following statements with reference to the equation                          

(1) This is a point format the continuity equation

(2) Divergence of current density is equal to the decrease of charge per unit volume per unit at every point

(3) This is Maxwell’s divergence equation

(4) This represents the conservation of charge

Select the correct answer

An electromagnetic field is radiated from

A monochromatic plane electromagnetic wave travels in vacuum in the positive X direction (x, y, z system of coordinates). The electric and magnetic fields can be expressed as

A steady current I flows through a long cylindrical wire of radius R. find the magnetic vector potential at any point outside the conductor at radius. Vector potential on the surface of the conductor may be taken to be equal to zero.

Match the appropriate item from the right-hand side with those on the left-hand side.         

The line integral of the vector potential A around the boundary of a surface S represents