Question

What four factors affect the induced emf?

Answer 1

1. Faraday’s first law of electromagnetic induction states, “Whenever a conductor is placed in a varying magnetic field, an electromotive force is induced. Likewise, if the conductor circuit is closed, a current is induced, which is called induced current.”
2. Faraday’s first second law of electromagnetic induction states that the induced emf in a coil is equal to the rate of change of flux linkage.

From the relation of induced emf is $(\mathrm{induced}\mathrm{emf})\mathrm{e}=\mathrm{NAB\omega }$,Factors which effect induced emf are

1. Number of turns of a coil$\left(\mathrm{N}\right)$: The number of turns on a coil is directly proportional with the induced emf.
2. Area of the coil$\left(\mathrm{A}\right)$: The area of the coil and the induced emf are directly proportional.
3. Strength of the magnetic field$\left(\mathrm{B}\right)$: The strength of the magnetic field is directly proportional with the induced emf.
4. The angular velocity$\left(\mathrm{\omega }\right)$: The angular velocity of the conductor is directly proportional with the induced emf.