Micah jogs 18m north, turns around and travels 13m south, turns around again and travels 6m north what is his displacement

true is the correct answer

hope i

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.