Question: A uniform magnetic field B is perpendicular to the plane of a circular wire loop of radius r. The magnitude of the field varies with

A uniform magnetic field B is perpendicular to the plane of a circular wire loop of radius r. The magnitude of the field varies with time according to B = B0e–t/τ, where B0 and τ are constants. Find an expression for the emf in the loop as a function of time.

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