A science student wants to make an artificial magnet using a copper wire wrapped around an iron bar, as shown in the figure. What should the student do next? a) Heat the wire around the bar b) Send current through the wire. c) Put the whole set up in sun for a week d) Touch the ends of the wire together. 7. Which material can be made magnetic by hammering it with another magnet? a) Glass rod b) Copper wire c).Iron nail d) Lead tube
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b)send current through the wire.
7. c).Iron nail
Explanation:
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