Which of the following statements can describe the process of the law of induction?

Question

increase in the number of turns in the coil increases the induced emf.

decrease in magnetic field decreases the induced current.

decrease in the speed of relative motion between coil and magnet will result in increase flux.

increase in the number of coil decreases the magnetic flux.

Answer 1

The emf (voltage) induced in a single loop of conductive material, such as a wire, is proportional to the rate of change of the magnetic flux d(B dot A) / dt.

For N loops, this is N d(B dot A) / dt.

B dot A is the vector product of the magnetic field B and the perpendicular to the area, A.