Question

Which of the following results in an induced emf across a given circuit?

• A. changing magnetic flux density
• B. changing area of the circuit.
• C. changing angle between the area vector of the loop and the direction of magnetic field.
• D. all of these

Answer 1

The correct option is D all of these

E.M.F can be induced in a circuit by all of these options- changing magnetic intensity, changing area of loop and changing angle between the area vector of the loop and the magnetic field lines. All these parameters help induce EMF in a system. All these factors effect the magnetic flux through the loop, which in turn results in an induced emf across the loop.