Briana is listing some pros and cons of recycling bottles. what can she list in the “con” column?

pro

con

uses less energy to make things from recycled products

reduces the amount of items that go into landfills

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.