Energy conversion from potential energy (the energy of position or composition) to kinetic energy (the energy of motion) is illu
strated by the diagram of a roller coaster. When the coaster is in position A, the potential energy is and the kinetic energy is . As the coaster moves to position B, the potential energy is and the kinetic energy is . As momentum carries the coaster into position C, the potential energy is and the kinetic energy is . Finally as the coaster reaches position D, the potential energy is and the kinetic energy is
An electric motor is a device that changes electrical energy into mechanical energy. This change occurs due to the interaction between the magnetic field of magnets and the magnetic field due to the electric current in the loop. The interaction between the two produces a torque that makes the loop rotate on a shaft.
As we know that the resistance of the wire is directly proportional to the length of wire and inversely proportional to the area of crossection of the wire.
As the material is copper for both the wires so the resistivity is same and the voltage is also same. As their resistance is different it means either length is different or the area of crossection is different.
