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Can Crushing: The Electro-Magnetic Force That Makes The Soda Pop
A dramatic demonstration of Faraday induction and of the repulsion of oppositely directed electric currents. An empty aluminum soft drink can is placed inside a coil of wire. When a large capacitor is discharged through the coil, the sudden increase in magnetic flux induces a large current in the wall of the can (Faraday’s Law).
This current is oppositely directed to the current in the coil (Lenz’s Law) and experiences a huge Lorentz force directed radially inward. Since the current is confined to the wall of the can, the portion of the can inside the coil is driven violently inward, pinching the can down to form a waist.
With a large enough charge on the capacitor, the can is actually torn in half and the radial component of the magnetic field propels the two halves to opposite directions. - (x)
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Gif made from: This video by Physics Girl
References: (x), (x).
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