Lenz's law

/ ˈlɛntsɪz /

noun

1. physics the principle that the direction of the current induced in a circuit by a changing magnetic field is such that the magnetic field produced by this current will oppose the original field

Lenz's law

1. A principle stating that an electric current, induced by a source such as a changing magnetic field, always creates a counterforce opposing the force inducing it. This law explains such phenomena as diamagnetism and the electrical properties of inductors. The law is named after its discoverer, German physicist Heinrich Lenz (1804–1865).

Word History and Origins

Origin of Lenz's law¹

C19: named after H. F. E. Lenz (1804–65), German physicist

Example Sentences

Inside it are a group of what Henderson refers to as hover engines, and the oversimplified explanation of how they work involves a little electromagnetism and Lenz’s law.

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It is only necessary to apply Lenz's law to see that a reversal of the currents will occur at the points, a and c, the direction of the current being represented by arrows in the figure.

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