What effect is received from current flow through a conductor?

The flow of electric current through a conductor generates both heat and a magnetic field due to the properties of the conductor and the nature of electricity.

When current travels through a conductor, it encounters electrical resistance, which is the opposition to the flow of electric charge. This resistance converts some of the electrical energy into thermal energy, resulting in heat. This phenomenon is referred to as Joule heating, and it explains why electrical components can become warm when in use.

Simultaneously, the flow of current creates a magnetic field around the conductor. This is a fundamental concept in electromagnetism, demonstrated by the right-hand rule where the direction of the magnetic field can be determined by the direction of the current flow. The strength of this magnetic field depends on the magnitude of the current and can be influenced by the properties of the conductor as well as its surrounding environment.

Thus, current flow through a conductor leads to the generation of both heat and a magnetic field, making the combined effect the correct answer. The individual effects of heat alone or a magnetic field alone do not encompass the full range of influences produced by current in a conductor, which is why those choices do not capture the entirety of the phenomenon.