physics class 12th chapter 1 Electric charges and fields –
Electric charges and fields are two of the most fundamental concepts in physics. They underlie the behavior of all matter and energy, and play a crucial role in many of the world’s most important technologies.
The first lesson of physics will tell about electric charge and field, I have given you the complete chapter below, which you can read and take your studies to a different stage. Mehra is not able to do his studies well, so in view of this problem, I have brought you the first chapter of online physics, Electric charge and field. By which you can get good marks by reading, read the first chapter given below, Electric charge and field, carefully.
An electric charge is a physical entity that possesses a negative electric charge. It is made up of elementary particles called electrons. Electric fields are created whenever charges are moved around. They can cause physical objects to move or interact with other objects.
All of us have the experience of seeing a spark or hearing a crackle when we take off our synthetle clothes or sweater, particularly in dry weather. This is almost mevitable with ladies garments like a polyester saree. Have you ever tried to find any explanation for this phenomenon? Another common example of electric discharge is the lightning that we see in the sky during thunderstorms. We also experience a sensation of an electric shock either while opening the door of a car or holding the tron bar of a bus after sliding from our seat. The reason for these experiences is discharge of electric charges through our body, which were accumulated due to rubbing of insulating surfaces. You might have also heard that this is due to generation of static electricity. This is precisely the topic we are going to discuss in this and the next chapter. Static means anything that does not move or change with time. Electrostatics deals with the study of forces, fields and potentials arising from static charges.
1.2 ELECTRIC CHARGE
Historically the credit of discovery of the fact that amber rubbed with wool or silk cloth attracts light objects goes to Thales of Miletus. Greece. around 600 BC. The name electricity is coined from the Greek word elektron meaning amber. Many such pairs of materials were known which
Electric charges and fields full chapter read now –
physics class 12 chapter 1 questions and answers –
How can you determine the atomic mass of an unknown metal if you know its density and the dimension of its unit cell? Explain.
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