To make an electromagnet, wrap a coil of wire around an iron core and connect it to a power source, such as a battery, to create a magnetic field.
To make an electromagnet, simply coil a wire around an iron core and connect the ends of the wire to a power source such as a battery, which generates a magnetic field when the current flows through the wire.
To make an electromagnet, wrap a wire around an iron nail, connect the ends of the wire to a battery, and the nail becomes magnetized when an electric current flows through the wire.
