Lenz's law presented in:
Correct answer: A. 1834
- A. 1834
- B. 1934
- C. 1826
- D. 1836
Explanation
Lenz's law was presented in the year 1834. It was formulated by the Russian physicist Heinrich Friedrich Emil Lenz in 1834. Lenz's law describes the direction of the induced electromotive force (EMF) and current generated by electromagnetic induction, stating that the induced current will always flow in such a direction as to oppose the change in magnetic flux that produced it.
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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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