How does increasing the current increase the strength of the magnet?

Increasing the current in a wire creates a stronger magnetic field around it due to Ampère's law, which states that the magnetic field strength is directly proportional to the electric current flowing through the conductor. As the current increases, the magnetic field lines become denser and more concentrated, resulting in a stronger magnetic force. This principle is fundamental in electromagnets, where adjusting the current allows for control over the magnet's strength. Thus, higher current leads to a more powerful magnet.