Does copper have magnetic domainsand can it be magnetised
Yes, copper has magnetic domains and it can be magnetized. But its magnetic strength is too weak to use or identify.
Material A gets magnetised under the influence of external magnetic field while material B does not get magnetised. Material A retains the acquired magnetism for a long time. Material C magnetises under the influence of a magnetic field and does not retain it for a long time. Which of them is the most suitable to make electromagnets?
what are the the chemical changes that take place to an iron bar if magnetised.? what will it's its configuration be? what is exactly happening when a magnet attracts another magnet or iron? do electromagnets have poles?what are exactly magnetic poles?