Lenz's law is also statement of:
Correct answer: B. Law of conservation of energy
- A. Law of conservation of charge
- B. Law of conservation of energy
- C. Law of conservation of mass
- D. Law of conservation of momentum
Explanation
Lenz's law is also a statement of Law of conservation of energy. Lenz's law, formulated based on the principle of conservation of energy, states that the direction of the induced electromotive force (emf) and the induced current in a conductor will be such that they oppose the change in magnetic flux that produced them. This opposition ensures that the work done by the induced current (and consequently the induced emf) in opposing the change in magnetic flux is consistent with the principle of energy conservation. In other words, energy is not created or destroyed in the process of electromagnetic induction; rather, it is transformed from the mechanical energy causing the change in magnetic flux to electrical energy in the induced current. Therefore, Lenz's law serves as a statement of the law of conservation of energy in the context of electromagnetic induction.
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About Electromagnetic Induction
Changing magnetic flux induces an emf according to Faraday's law, while Lenz's law gives the direction that opposes the change producing it. Transformers apply induction between coils to step alternating voltage up or down, with turns ratio, current transformation and energy losses determining practical operation.
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More Electromagnetic Induction questions
The direction of the induced current is always to oppose the change that causes the current. This is the statement OF:
Mathematically Faraday's law can be expressed as:
The rate of change of magnetic flux is directly proportional to the induced emf is called:
The induced current in a circuit depends upon:
Which one of the following produced first:
The induced current can be increased: