Introduction to Electromagnetic Induction

Introduction to Electromagnetic Induction

• Uptill now we have discussed the basic properties, concepts of magnetism and magnetic circuits. Similarly we have studied, the magnetic effects of an electric current. But we have not seen the generation of e.m.f. with the help of magnetism. The e.m.f. can be generated by different ways, by chemical action, by heating thermocouples etc. But the most popular and extensively used method of generating an e.m.f. is based on electromagnetism.

• After the magnetic effects of an electric current, attempts were made to produce electric current with the help of magnetism rather than getting magnetism due to current carrying conductor. In 1831, an English PhysicistMichael Faraday succeeded in getting e.m.f. from magnetic flux. The phenomenon by which e.m.f. is obtained from flux is called electromagnetic induction. Let us discuss, what is electromagnetic induction and its effect on the electrical engineering branch, in brief.