The magnetic field inside a current-carrying coil increases when

Question

Quizplus · Accepted Answer

A) According to Ampere's law, the magnetic field inside a current-carrying coil is directly proportional to the current passing through it. Thus, increasing the current will increase the magnetic field.

B) The magnetic field inside a coil is directly proportional to the number of loops of wire in the coil. Thus, increasing the number of loops will increase the magnetic field.

C) When an iron core is inserted into a coil, it increases the magnetic flux and thus increases the magnetic field inside the coil.

Therefore, all of the given options are correct and the best choice is D.

The Magnetic Field Inside a Current-Carrying Coil Increases When