Question

how does dgree of closer magnetic field

Answer 1

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Answer 2

Electromagnetism is the force produced when an electrical current flows through a simple conductor such as a piece of wire or cable.

A small magnetic field is created around the conductor with the direction of this magnetic field with regards to its “North” and “South” poles being determined by the direction of the current flowing through the conductor.

Magnetism plays an important role in Electrical and Electronic Engineering because without it components such as relays, solenoids, inductors, chokes, coils, loudspeakers, motors, generators, transformers, and electricity meters etc, would not work if magnetism did not exist.

Then every coil of wire uses the effect of electromagnetism when an electrical current flows through it. But before we can look at Magnetism and especially Electromagnetismin more detail we need to remember back to our physics classes of how magnets and magnetism works.