Which instrument can be used to obtain polarized light?

A lossless line of characteristic impedance Z₀ is terminated in a pure reactance of -jZ₀. The VSWR is:

What is the value of the H component if the power of a wave in air is 424.125 units?

The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is

The armature torque of the D.C. shunt motor is proportional to

The cross product of the electric (E) and magnetic (H) components of an electromagnetic (EM) wave is 5+7j. Find the power of the EM wave.

The length of a given cylindrical wire is increased by 100%, and due to the consequent decrease in diameter, the change in the resistance of the wire will be:

A three-point starter is considered suitable for which type of DC motors?

Due to Earth's magnetic field, charged cosmic ray particles

When does a magnetic field exert a force on a charged particle?