Question

The strength of the magnetic field increases as the size of the current increases.

Which of the following best describes why an electric current fan create a magnetic field?
OA. Magnetism and electricity are part of the same force.
OB. Electricity powers both permanent magnets and electromagnets.
OC. Electric kinetic energy is stored as magnetic potential energy.
OD. Magnetism and electricity are two of the four fundamental forces.

Answer 1

A) Magnetic and electric are part of the same force - see Maxwell's equations.

Answer 2

b. they both have permanent magnets and elctromagnetes