Vinod took out four nails of similar size and thickness
but made from four different metals. He wanted to find
out which metal nail could turn into an electromagnet.
Which one of the following experiments will work?
the answer is supposed to be iron
Technically, the copper experiment will also work and although it will form a weak magnet, it will be a magnet nonetheless. The question prompt asks to identify the experiments which will work and that is both A and will be the correct options