Which parameter has a value of 1 in air medium?

The directivity of an antenna with a loss factor of 22.7% is 13.96. Calculate the gain (G) of the antenna.

In an AC circuit containing only a capacitor, the current

The attraction capacity of an electromagnet will increase if the

If an electron oscillates at a frequency of 1 GHz, what type of electromagnetic radiation does it produce?

Find the cut-off wavelength of the wave if the wavelength and the guided wavelength are given as 0.82 and 3.6 units, respectively.

The power of a wave is 120 units and the RMS value of the magnetic field, H, is 45 units. Calculate the RMS value of the electric field, E_rms.

A conductor of length 1 metre moves at right angles to a magnetic field with a flux density of 1 Wb/m² at a velocity of 50 m/s. The induced emf in the conductor will be __________V

During rheostat braking of D.C. series motors, what happens?

A wire of certain length is bent to form a circular coil of a single turn. If the same wire is bent into a coil of smaller radius so as to have two turns, then the magnetic field produced at the center by the same value of current is