When asked how to create an electromagnet, the best answer would be, "you can create an electromagnet by a. applying a direct current to a non–magnetic material in order to create an electromagnetic field." b.  covering a wire with insulation and applying a direct electrical current to the magnet." c.  coiling a ferromagnetic material, wrapping in an insulator, and applying a current to the coil." d.  wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current."

it is called kinetic energy

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.