The direction of the induced current is always to oppose the change that causes the current. This is the statement OF:
Correct answer: A. Lenz's law
- A. Lenz's law
- B. Faraday's law
- C. Ampere's law
- D. Coulomb's law
Explanation
The statement "The direction of the induced current is always to oppose the change that causes the current" is a statement of Lenz's law.Lenz's law is a fundamental principle in electromagnetism that describes the direction of the induced electromotive force (emf) and the induced current in a conductor. According to Lenz's law, the induced current flows in such a direction as to oppose the change in magnetic flux that produced it. In other words, the induced current acts to counteract the change in magnetic flux that caused it. This ensures that the system follows the principle of conservation of energy by dissipating energy and maintaining equilibrium.
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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
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 emf produced by the motion of a coil across the magnetic field is called:
Lenz's law is also statement of:
The induced current in a circuit depends upon:
Which one of the following produced first: