In electricity there are several types of phenomena which involve the other forms of energy besides electrical energy. Visible light is an example. A light bulb converts electricity into radiant energy which you can see. This was 1 of the motivations for people like Thomas Edison to work with the electricity. Visible light can be converted into electric current or voltage also. A photovoltaic cell can perform this task.
Light bulbs give off some heat always, along with visible light. The incandescent lamps give more energy as heat than as light. And you are familiar with electric heaters, designed for purpose of changing the electricity into heat energy. It is like visible light, except that the waves are longer and you can't see them.
Electricity can be converted into various radiant-energy forms, like radio waves, ultraviolet, and X rays. Fast-moving neutrons, protons, electrons, and atomic nuclei are significant form of energy, especially in deep space where they are called as cosmic radiation. This effect makes it possible to build an atomic reactor energy of which can be used to generate electricity. Unfortunately, this form of energy, called as nuclear energy, creates harmful by- products which are difficult to dispose of.
When the conductor is moved in a magnetic field, flow of electric current is there in that conductor. In this manner, mechanical energy is converted into electricity. In the same fashion generator works. Generators can work backwards also. Then you have a motor which changes electricity into useful mechanical energy.
A magnetic field contains energy of a special type. The science of magnetism is related to electricity closely. Magnetic phenomena are of great importance in electronics. The oldest and most universal source of magnetism is flux field surrounding the earth, which is caused by alignment of iron atoms in the core of the planet.
A changing magnetic field creates a fluctuating electric field, and a fluctuating electric field generates a changing magnetic field. This phenomenon, termed as electro- magnetism, makes it possible to send radio signals over long distances. The magnetic and electric fields keep producing one another over and over again through space.
Chemical energy can be converted into electricity in all wet cells, dry cells, and batteries. Your car battery is an excellent example. The acid reacts with metal electrodes to generate the electromotive force. When the 2 poles of the batteries are connected each other, current results. The chemical reaction continues, keeping the current going for some time. But the battery can store a certain quantity of chemical energy. Then it "runs out of juice," and the supply of chemical energy should be restored by charging. Some cells and batteries, like lead-acid car batteries, can be recharged by driving current through them, and others, as most flashlight and transistor-radio batteries, cannot.