Induced Current from Changing Magnetic Field When a bar magnet is brought toward a loop of wire, it increases the magnetic field in the loop. This change in the magnetic flux in the loop generates a voltage according to Faraday's law. The resulting flow of electric current in the wire loop produces an induced magnetic field that opposes the change of magnetic field (Lenz's Law). Change to the condition of decreasing magnetic field.

Index Magnetic field concepts Faraday's Law concepts

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Induced Current from Changing Magnetic Field When a bar magnet is moved away from a loop of wire, it decreases the magnetic field in the loop. This change in the magnetic flux in the loop generates a voltage according to Faraday's law. The resulting flow of electric current in the wire loop produces an induced magnetic field that opposes the change of magnetic field (Lenz's Law). Change to the condition of increasing magnetic field.

Index Magnetic field concepts Faraday's Law concepts

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