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23 January, 19:56

According to Lenz's Law, the direction of the induced current in a conducting loop of wire is that which tends to oppose the change that produces it. True or False?

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  1. 23 January, 21:36
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    Answer: True

    Lenz's law, formulated by the physicist Heinrich Lenz in 1834, relates changes produced in the electric field by a conductor (a loop of wire, for example) with the property of varying the magnetic flux, and states that:

    The voltages applied to a conductor generate an electro-motive force whose magnetic field opposes any variation of the original current that produced it.

    In other words:

    the induced electricity will be in a direction that opposes the variation of the magnetic flux that produced it

    This is due the polarity of the induced voltage and it is an infallible consequence of the principle of conservation of energy.
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