Lenz's law
Understand the Problem
The question is asking about Lenz's law, which is a principle in electromagnetism. It describes the direction of an induced current in a conductor when exposed to a changing magnetic field. The law states that the induced current will oppose the change in magnetic flux that produced it.
Answer
An induced emf always opposes the change in magnetic flux that produced it.
Lenz's law states that the direction of an induced electromotive force (emf) will always be such that it opposes the change in magnetic flux that produced it.
Answer for screen readers
Lenz's law states that the direction of an induced electromotive force (emf) will always be such that it opposes the change in magnetic flux that produced it.
More Information
Lenz's law helps ensure conservation of energy by making sure that the induced current will hinder any increase in magnetic energy.
Tips
A common mistake is ignoring the direction of the induced current. It should always oppose the change in the magnetic field.
Sources
- Lenz's law - Wikipedia - en.wikipedia.org
- What is Lenz's Law? - Definition, Formula, Applications - Byjus - byjus.com
- Lenz's law | Definition & Facts - Britannica - britannica.com
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