How does potential difference benefit human life?

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

your answer is c! hope this : )

the components of a vector are the parts of the vectors that are to each other.

b perpendicular