Faraday's and Lenz's Law
Lenz's Law
Lenz's law says: The induced emf is always in such a direction as to oppose the change that caused it.
This is saying that the emf will produce a force that opposes the motion of the conductor- in other words resistance.
Using Fleming's left hand rule point your thumb in the direction of the force of resistance- which is in the opposite direction to the motion of the conductor. (pretend the conductor is moving down, your thumb would be up)
Your second finger will now give you the direction of the induced emf.
If the conductor is connected as part of a circuit, a current will be induced in the same direction as the induced emf.
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