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Transcript
22.5 Lenzâs Law LENZâS LAW The induced emf resulting from a changing magnetic flux has a polarity that leads to an induced current whose direction is such that the induced magnetic field opposes the original flux change. Reasoning Strategy 1. Determine whether the magnetic flux that penetrates the coil is increasing or decreasing. 2. Find what the direction of the induced magnetic field must be so that it can oppose the change influx by adding or subtracting from the original field. 3. Use RHR-2 to determine the direction of the induced current.
