state lenz law of electromagnetic. show that it is in accordace with law of conservarion of energy
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Answer:
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Explanation:
Lenz's law: According to this law the direction of induced current in a closed circuit is always such as to oppose the cause that produces it.
LENZ'S LAW IN ACCORDANCE WITH THE LAW OF CONSERVATION OF ENERGY :
For example, in the experimental verification of Lenz's law, when the N-pole of the magnet is moved towards the coil, the upper face of the coil acquires north polarity.
Therefore, work has to be done against the force of repulsion, in bringing the magnet closer to the coil.
Similarly, when the N pole of a magnet is moved away, south polarity develops on the upper face of the coil.
Therefore, work had to be done against the force of attraction, in taking the magnet away from the coil.
IT IS THE MECHANICAL WORK DONE IN MOVING THE MAGNET WITH RESPECT TO THE COIL THAT CHANGES INTO ELECTRICAL ENERGY PRODUCING INDUCED CURRENT.
THUS, ENERGY IS BEING TRANSFORMED ONLY.
When we do not move the magnet, the work done is zero. Therefore, the induced current is also not produced.
HENCE LENZ'S LAW OBEYS THE PRINCIPLE OF ENERGY CONSERVATION.
Conversely, Lenz's law can be treated as a consequence of the principle of energy conservation.
Answer:
lenzs law states that when an end is generated by a change in magnetic flux according to Faraday's law.the polarity of reduced EMF is such that it produces a current whose magnetic field opposes the change which produce it.
lenzs law in accordance with law of conservation of energy:
for example in the experimental verification of lens law when the N pole of magnet is moved towards the coil the upper face of the coil acquires north polarity .
therefore work has to be done against the force of repulsion.