Which law states that the induced electromotive force in a closed circuit is directly proportional to the time rate of change of magnetic flux through the circuit?
Answer and explanation
Correct answer: A. Faraday's Law of Induction
- Step 1: Michael Faraday discovered that a changing magnetic flux induces an electromotive force (EMF).
- Step 2: The law is formalized as , which is Faraday's Law of Electromagnetic Induction (with Lenz's law providing the negative sign).
Answer
Faraday's Law of Induction.
Why not the others: 'Ampere's Circuital Law' relates magnetic fields to electric currents; 'Ohm's Law' relates voltage, current, and resistance; 'Coulomb's Law' describes electrostatic forces between static charges.
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