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Magnets and Electricity Magnets are used to generate, or produce, electricity. Spinning a coil of wire inside a magnetic field produces an electric force between the ends of the coil. In a similar way, an electric current produces a magnetic field around it. A compass placed next to a wire carrying an electric current will point to the wire. A current-carrying wire wrapped in a coil of more wire makes a strong magnet. A coil of current-conducting wire wrapped around an iron bar makes an even stronger magnet. Around the coil is a magnetic field much like the one around a bar magnet. But a bar magnet is always magnetized, while a coil wrapped around an iron bar is a magnet only when electric current flows through the coil. For this reason it is called an electromagnet. This link between electricity and magnetism allows motion to be produced from electric energy. An electric motor uses electromagnets. By changing the direction of the electric current back and forth, these electromagnets alternately attract and repel each other. This causes the motor to turn. √ What forms around a wire carrying an electric current?