Describe, with the help of a suitable diagram, how one can demonstrate that emf can be induced in a coil due to the change of magnetic flux. Hence state Faraday's law of electromagnetic induction.

How would you obtain the expression for induced emf from the laws of electromagnetic induction?

Two long straight parallel conducts carrying steady currents I_(1) and I_(2) are separated by a distance d. Explain briefly with the help of suitable diagram, how the magnetic field due to one conductor acts on the other. Hence deduce the expression for the force acting between the two conductors. Mention the nature of this force.

How would you demonstrate the phenomenon of electromagnetic induction with the help of two circular conducting coils?

Statement I: Induced emf in a conductor is proportional to the time rate of change of associated magnetic flux. Statement II: In case of electromagnetic induction transfer of energy takes place in a manner so that total energy is conserved.

The current in a primary coil increases by 20 A in 0.1 s. If the average emf induced in the secondary coil be 100 V, determine the mutual inductance between the coils and the change in magnetic flux in the secondary coil.

The mutual inductance between two adjacent coils is 1.5 H. If the current in the primary coil changes from 0 to 20 A in 0.05 s, determine the average emf induced in the secondary coil. If the number of turns in the secondary coil is 800, what change in flux will be observed in it?