The known non-conservative forces are force, like friction, where energy gets wasted. This means that useful energy gets converted to unusable energy.
You can invent a Universe with non-conservative forces, where you can actually get energy out of nothing, but this is not likely to happen in the real world.
Chemical potential energy
There are several conservation laws in physics, and many of them tell an astronomer what is, and what isn't, possible. This can help explain how certain things happen, or even predict what will happen. Among the laws of conservation that are relevant in astronomy are: conservation of mass; conservation of energy; conservation of momentum; conservation of rotational momentum; conservation of charge.
when coal burns the energy change is chemical -------------> electrical
Energy can only be transformed from one form to another, but it cannot be created or destroyed according to the principle of conservation of energy.
Of course not! There is no direct relationship between electric current and electric energy. They aren't even measured in the same units. Also in most cases small electric currents provide less electric energy that very large electric currents. If all electric currents provided the same electric energy then the electric current from a flashlight battery that lights the bulb when you turn the switch on could provide the same electric energy as the electric current in a lightning bolt when it strikes... therefore every time you turned on a flashlight the electric energy would destroy the flashlight and electrocute you! As this doesn't happen, the only answer that your question can have is no!
There is a piece of filament in every light bulb, which has so much friction that when the electric current passes through it, heat energy is produced. This heat energy is then converted to light energy.
Energy cannot be created or destroyed - it can only be transformed from one form to another. This principle is known as the law of conservation of energy.
In an electric motor, electrical energy is converted into mechanical energy. This conversion is achieved by the interaction of the magnetic fields generated by the flow of electric current in the motor's coils, causing the motor to rotate and produce mechanical work.
Inside an electric lamp, electrical energy is converted into light and heat energy. The electrical energy flows through the lamp's filament, heating it up to produce light. Some of the electrical energy is also converted into heat energy due to resistance in the filament.
You'd surely burn your hand ! But no electric shocks!
Operation Conservation happened on 1990-05-06.
In an isolated system, the total energy remains constant. Energy can only be transferred or transformed between different forms within the system, but the total amount of energy remains unchanged. This principle is described by the law of conservation of energy.