Electromagnetism MCQs

The characteristic impedance of a lossless transmission line is given by

The average noise temperature of earth, as viewed from space, is

A plane electromoagnetic wave in free space is spacified by the electric field ax 120 cos (cot ?13z) +5 cos (cot +13z) V/m.

If ill is the polarization vector and k is the direction of propagation of a plane electromagnetic wave, then

If the vector A and le are conservative, then

The value of dl along a circle of radius 2 units is

A magnetic field B = (iix + 2iy - 4a) exists at a point. If a test charge moving with a velocity, = vo (3ax - y 2) experiences no force at a certain point, the electric field at that point will be

Consider the following statements associated with the basic electrostatic properties of ideal conductors I. The resultant field inside is zero 2. The net charge density in the interior is zero 3. Any net charge density in the interior is zero 4. The surface is always an equipotential 5. The field just outside is zero. Of these statements

Consider the following statements associated with the basic electrostatic properties of ideal conductors 1. Capacitance is proportional to area of plates 2. Capacitance is inversely proportinal to distance of separation of plates 3. The dielectric material is in a state of compression. Of these statements