Question

We can induce the current in a coil by

Moving the coil in a magnetic field
By changing the magnetic field around it
By changing the orientation of the coil in the magnetic field
All of above

Answer 1

Faraday's Principle of Electromagnetic Induction states that the emf induced in a loop due by a changing magnetic flux is equal to the rate of change of the magnetic flux threading the loop. The magnetic flux threading a coil of wire can be changed by moving a bar magnet in and out of the coil.