A changing magnetic field induces an emf. TRUE or FALSE?
Understand the Problem
The question is asking whether the statement 'A changing magnetic field induces an emf' is true or false. This is a fundamental principle in electromagnetism, specifically Faraday's law of electromagnetic induction.
Answer
TRUE
The changing magnetic field induces an emf because it leads to a change in magnetic flux, which according to Faraday's law of electromagnetic induction, results in the generation of an electromotive force (emf). This principle is utilized in electricity generators.
Answer for screen readers
The changing magnetic field induces an emf because it leads to a change in magnetic flux, which according to Faraday's law of electromagnetic induction, results in the generation of an electromotive force (emf). This principle is utilized in electricity generators.
More Information
Faraday's law of electromagnetic induction is the principle describing this phenomenon, stating that an emf is induced in a loop when there is a change in magnetic flux. This is a fundamental principle used in many electrical devices like generators and transformers.
Tips
A common mistake is assuming any magnetic field induces an emf; it's only true for changing magnetic fields.
Sources
- A changing magnetic field can induce an emf (an emf is like a ... - homework.study.com
- How does a changing magnetic field induce an emf? - physics.stackexchange.com
- What does a changing magnetic field induce? - Physics - Vaia - vaia.com
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