1. Current passes through a coil from left to right as shown. (a) If the current is increasing with time, in which direction is the induced emf? (b) If the current is decreasing in time, what then is the direction of the induced emf?
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When the current is increasing with time, the magnetic field inside the coil is also increasing. According to Lenz's Law, the induced emf will create a magnetic field that opposes the change in the original magnetic field. So, the induced emf will create a Show more…
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