a coppr rod, an unmagnetise steel rod and a magnetused steel rod havw been painted to look exactly identical. explain how you will identify each rod with the help of a small magnetic compass only

The operation of heart pacemakers will be affected by the close proximity of a magnet as they can cause pacemakers to operate in a mode that does not respond to the user’s own heart rhythm. The way a pacemaker responds to a magnetic field differs between manufacturers and therefore people with pacemakers should not put strong magnets close to their chest.
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