Electric current flowing through a conductor creates a magnetic field around it. This phenomenon is known as the magnetic effect of electric current. The direction of the magnetic field can be determined using the Right-Hand Thumb Rule: point your thumb in the direction of the current flow, and your curled fingers will indicate the direction of the magnetic field lines.
The strength of the magnetic field depends on the amount of current flowing through the conductor. The greater the current, the stronger the magnetic field. Additionally, the magnetic field lines form concentric circles around the conductor, and their density decreases as you move away from the conductor.
The magnetic effect of electric current has numerous applications in our daily lives. Electromagnets, which are temporary magnets created by passing an electric current through a coil of wire, are used in various devices such as electric motors, generators, loudspeakers, and magnetic resonance imaging (MRI) machines. Understanding the magnetic effect of electric current is crucial in comprehending the functioning of these devices and their significance in modern technology.
