The Biot-Savart's law is a general modification of which law?

Magnetism can be induced in magnetic material by placing it in a magnetic field.

For which of the following is the curl zero?

2.64 mW of power is fed to a lossless antenna which has a directive gain of 7 dB. Find the total power radiated by the antenna.

A wave travelling in a transmission line has a wavelength of 6.9 units and velocity of 15 × 10⁷ units. Calculate its frequency.

The charge density of a material is 12 units in a volume region of 2.7 units. Find the electric flux density of the material.

What factor is used to identify the boundary of separation between two magnetic materials?

In an AC circuit, the potential difference across an inductor and a resistor connected in series are 16 V and 20 V respectively. What is the total potential difference of the source?

Choose the correct option for the following statement:

If the vector field is curl-free, a scalar potential may be defined which completely describes the vector field.

Midway between two equal and similar charges, a third equal and similar charge is placed. What will happen to the third charge?