(a) Draw a circuit diagram to show how a soft iron piece can be transformed into an electromagnet.
(b) Describe how an electromagnet could be used to separate copper from iron in a scrap yard.
Answers
Explanation:
(a) A piece of soft iron can be turned into an electromagnet by wrapping an isolated wire around it and transmitting current through the cable.
(b) In this separation process, a large electromagnet is mounted on a crane and decided to move over the scrap yard. It removes the iron particles from the mixture and moves them to another location. Alternatively, iron particles are lowered by shutting off the electromagnet coil current. Thus isolating them from the copper.
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