Electromagnetic induction, represented by either Faraday’s law or the Lorentz force law, produces many paradoxes requiring careful examination and application of these laws. The paradoxical example of induction, presented herein, arose in a class and is resolved within the framework of special relativity.

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Note that ferrofluids are a possible nonconducting magnetic shield. Ferrofluids are composed of ferromagnetic particles suspended in a nonconducting fluid. The suspension is paramagnetic because the particles are randomized with respect to one another by Brownian motion. But the particles will respond to external magneticflux, making the suspension highly permeable.
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