Concept:Faraday’s laws of electromagnetic induction: a changing magnetic flux through a closed loop induces an emf in the loop.
Explanation:A DC generator converts mechanical energy into electrical energy.
It works by moving a conductor in a magnetic field.
The conductor cuts magnetic field lines, changing the magnetic flux linked with the circuit.
This change in flux induces an electromotive force (emf) in the conductor, as per Faraday’s law:
E=−dtdϕ.
The induced emf drives a current; its direction is given by Fleming’s right-hand rule and reverses when the conductor’s motion reverses.
Thus, the generator produces direct current electricity based on electromagnetic induction.
Answer:C. Faraday’s laws of electromagnetic induction
