The science class decided to build an electromagnet. They wrap a strand of wire around a large nail three times, and connect the wire to a battery. The magnet is strong enough to lift a two pound metal plate. The class wants to be able to lift a four pound plate with the electromagnet. What should they do? A) Wrap an even larger nail in three coils of wire. B) Wrap the nail with wire six times , not three. C) Wrap the nail with only one coil of wire. D) Try using a smaller battery. B. Wrap the nail with wire six times, not three. Explanation: The more you wrap the nail with wire the stronger the electromagnet gets.