If the current flowing through a coil of wire is increased, what happens to the magnetic field strength?

When the current flowing through a coil of wire is increased, the magnetic field strength produced by that coil also increases. This relationship is described by Ampère's Law, which states that the magnetic field around a conductor is directly proportional to the amount of electric current flowing through it.

In simpler terms, when the current increases, it generates a stronger magnetic field due to the greater number of charged particles moving through the wire. This principle is fundamental in electromagnetism and is the basis for how electric coils (like inductors and transformers) function.

Therefore, as the current increases, the magnetic field strength increases correspondingly, giving rise to a stronger magnetic influence around the coil.