IIT JEE , AIEEE Forum - Physics , Magnetism

power0071

sir,according to lenz's law, mecahanical energy is converted to electric energy.....nw , i switch on an electromagnet..n a coil is placed near it . induced current develops in it due to change of flux n continues until the current in the electromagnet gets to max. so, where did this induced current come from in this case.i didnt apply any mechanical work here , just switched on the switch, still we get an induced current

krishna.gopal

We get induced current because the battery does that work. That is the concept of mutual inductance. A back emf must be devoled in the coil of electromagnet and the battery had to do work agains it

Ask & Discuss Questions with Community & Experts