Question

Which item is necessary to make an electromagnet?

Answer 1

It is the last picture with the red background and the wires. To make something electrical you need electricity and the wires will turn a magnet into an electromagnet.

Answer 2

An electromagnet is a device which has conducting wires wrapped around an iron core. When, electricity is passed through the wires, a magnetic field is generated. The set up acts as a strong magnet.

For making an electromagnet, a current carrying wire wrapped around a magnetic material is required. So out of the given pictures, the conducting wires are necessary to make an electromagnet. The correct option is the last picture.