Whenever there is a relative motion between a coil and a magnet ,and induced current flows in the coil. What is this phenomenon known as?

When the number of magnetic field lines through a closed loop changes ,an induced current flows in the coil. Is this statement true.

Explain different ways to induce current in a coil.

Figure shows three different orientations of a circular coil rotating in the magnetic field between the poles of a horse shoe magnet. Determine the direction of induced current in the coil, if the rotation is anticlockwise as viewed by the reader.

Self inductance or coefficient of self induction Whenever an electric flowing through a coil changes, the magnetic flux linked with the circuit also changes. And an induced emf is produced in the circuit. This phenomenon is called self-induction. The magnetic flux linked with the coil (phi) is proportional to the current (I) flowing in te circuit i.e. phi propto I . The self-inductance of the coil is

A circular coilof radius 0.157 m has 50 number of turns. It is placed such that its axis is in magnetic meridian. A dip needle is supported at the centre of the coil with its axis of rotation horizontal, and in the plane of the coil. The angle of dip is 30^(@) when a current flows through the coil. The angle of dip becomes 60^(@) on reversing the current. Find the current in the coil assuming that the magnetic field due to the coil is smaller than the horizontal component of earth's magnetic field, H =3xx10^(-5) T.

A magnet is moved towards a coil. What is the source of electric current induced in the coil?

Could a current be induced in a coil by rotating a magnet inside the coil? If so, how?