What can a electromagnet do that can't be done with a regular magnet?

Answer 1

It can switch off.

Answer 2

An advantage of using an electromagnet shown on the crane in the image below instead of a regular magnet to move cars in a junkyard is that an electromagnet can easily be turned on andAn advantage of using an electromagnet shown on the crane in the image below instead of a regular magnet to move cars in a junkyard is that an electromagnet can easily be turned on andAn advantage of using an electromagnet shown on the crane in the image below instead of a regular magnet to move cars in a junkyard is that an electromagnet can easily be turned on andAn advantage of using an electromagnet shown on the crane in the image below instead of a regular magnet to move cars in a junkyard is that an electromagnet can easily be turned on and