What is Lenz`s law?? Explain
What is Lenz`s law?? Explain
Lenz’s law shows that how electromagnetic circuits follow the law of conservation of energy.
When N(north)-pole of a magnet is moved towards the coil, the upper face of the coil acquires north polarity. A force of repulsion acts between the magnet and the coil. Therefore , work has to be done against the force of repulsion, in bringing the magnet closer to the coil.
Similarly, when N-pole of the magnet is moved away, south polarity develops on the upper face of the coil. Now a force of attraction starts to act between the magnet and the coil. Therefore, work has to be done against the force of attraction, in taking the magnet away from the coil.
When we do not move the magnet ,work done is zero. Therefore no induced current is produced.
It is the mechanical work done in moving the magnet w.r.t the coil that changes into electrical energy producing induced current. Thus , the energy is conserved. It only gets transformed.
Lenz’s law shows that how electromagnetic circuits follow the law of conservation of energy.
When N(north)-pole of a magnet is moved towards the coil, the upper face of the coil acquires north polarity. A force of repulsion acts between the magnet and the coil. Therefore , work has to be done against the force of repulsion, in bringing the magnet closer to the coil.
Similarly, when N-pole of the magnet is moved away, south polarity develops on the upper face of the coil. Now a force of attraction starts to act between the magnet and the coil. Therefore, work has to be done against the force of attraction, in taking the magnet away from the coil.
When we do not move the magnet ,work done is zero. Therefore no induced current is produced.
It is the mechanical work done in moving the magnet w.r.t the coil that changes into electrical energy producing induced current. Thus , the energy is conserved. It only gets transformed.
