What happens to a magnet when it is dropped vertically through a wire coil aligned horizontally to the Earth's surface?

Prepare for the TExES Science 7-12 Test. Study with flashcards and multiple choice questions. Each question includes hints and explanations. Get ready for your exam!

When a magnet is dropped vertically through a wire coil, it creates a changing magnetic field that induces an electric current in the coil through electromagnetic induction. According to Faraday's Law of Electromagnetic Induction, the rate of change of the magnetic flux through the coil leads to the generation of an induced electromotive force (emf) that produces a current in the coil.

This induced current generates a magnetic field that opposes the magnetic field of the falling magnet, as described by Lenz's Law. The interaction of these magnetic fields results in a magnetic force acting on the magnet that opposes its motion. As a consequence, the magnet experiences a drag force that reduces its acceleration. Instead of falling freely under the influence of gravity alone, the magnet's acceleration is less than the acceleration due to gravity (g), which leads to a non-uniform acceleration. Initially, the magnet accelerates downward, but as it falls, the opposing magnetic force increases, leading to a gradual decrease in its acceleration until it reaches a point where it could move with a relatively constant speed when the forces balance out.

Therefore, the correct choice accurately describes the behavior of the magnet when it experiences an acceleration that is non-uniform and less than g due to the effects

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