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3 cards from this section. Quick, good the night before a test.
What is Lenz's Law?
Think about how induced current behaves when something changes in its environment.
How does Lenz's Law relate to conservation of energy?
Consider why systems need to maintain energy balance.
What does Lenz's Law state?
Consider what happens to current when magnetic conditions change.
Is Lenz's Law an indication of energy conservation in electromagnetic systems?
Think about how energy transformations occur in electrical systems.
A coil has 100 turns and a magnetic flux that changes from 0.5 Tm^2 to 0.3 Tm^2 in 1 second. Calculate the induced emf.
Focus on the number of turns and the change in magnetic flux over time.
In a setup where a magnet is thrust towards a coil quickly, describe qualitatively what happens to the induced current and how the system reacts.
Think about how the current tries to maintain balance.
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