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Problem: How is an EMF induced in a coil? Is this a correct explanation of induced emf and Lenz's Law?

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An EMF is induced in a coil by changing magnetic flux with respect to time. According to faradays law:

Induced emf:

ε=-dϕBdt

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How is an EMF induced in a coil? Is this a correct explanation of induced emf and Lenz's Law?

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