show that lenz's law is in accordance with the law of conservation of energy???

 law of conservation of energy  in lenz's law:
                    In Faraday’s experiment when N- pole of magnet is moved towards the coil, the face of the coil towards the approaching magnet acquires N – polarity. Work has to be done against force of repulsion in bringing the magnet closer to the coil. Similarly, when N- pole of magnet is moved away the coil, the face of the coil towards the receding magnet acquires South polarity. Work has to be done against force of attraction in taking the magnet away from the coil. It is this mechanical  work done on the magnet against the force of repulsion or attraction in moving the magnet w.r.t. the coil that changes into electrical energy producing induced e.m.f. and induced current. When the magnet is stationary, no work done and so no induced current. Hence Lenz’s Law obeys the principle of conservation of energy

  • 89
What are you looking for?