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please tell about electric field

4 years ago

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an electric field is a property that describes the space that surrounds electrically charged particles or that which is in the presence of a time-varying magnetic field. This electric field exerts a force on other electrically charged objects. The concept of an electric field was introduced by Michael Faraday.

The electric field is a vector field with SI units of newtons per coulomb (N C−1) or, equivalently, volts per metre (V m−1). The SI base units of the electric field are kg·m·s−3·A−1. The strength of the field at a given point is defined as the force that would be exerted on a positive test charge of +1 coulomb placed at that point; the direction of the field is given by the direction of that force. Electric fields contain electrical energy with energy density proportional to the square of the field amplitude. The electric field is to charge as gravitational acceleration is to mass and force density is to volume.

An electric field that changes with time (such as due to the motion of charged particles in the field) will also influence the magnetic field of that region of space. Thus, in general, the electric and magnetic fields are not completely separate phenomena; what one observer perceives as an electric field, another observer in a different frame of reference perceives as a mixture of electric and magnetic fields. For this reason, one speaks of "electromagnetism" or "electromagnetic fields." In quantum mechanics, disturbances in the electromagnetic fields are called photons, and the energy of photons is quantized.


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4 years ago

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can u provide me with some skills whic are to be handled at the time of jee
 
 
Please refer to the below mentioned link: http://www.askiitians.com/iit-jee/advanced/preparation-tips.html Thanks.
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Vijay Mukati one month ago
 
hello,dear student first thing you must remember is to do hard work.you must not be confuse during the exam. be confident but not over confident.do not be nervous.practice previous years...
 
SONALI one month ago
i m finding a book so is this a good hoice for me
 
 
Which choice?
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Vijay Mukati 9 months ago
 
You may go for NCERT books, rather follow these extensive tips –Stay focused on your studies and keep in mind that one must focus on Physics, Chem and Maths, try to fortify these three,...
 
Ayushmaan Vardhan 9 months ago
 
For Physics – consult books of – HC Verma, Arihant Publ, IE Irodov For MAths – S L Loney, HAll & Knight, Arihant, Tata Mcgrawhills For Chemistry – OP Tondon, Solomon, P Bahadur, J D Lee...
 
Soneel Verma 9 months ago
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Neeti 9 months ago
 
P.Bahadur for Physical Chemistry Solomons for organic chemistry O.P Randon for inroganic chemistry :) and even J.D.Lee is very good for inorganic chemistry :) Feel free to ask any follow up ...
 
Neeti 9 months ago
 
what is ur opinion about cengage publication
 
gunvant bhati 9 months ago
is hc vermo..enough for iitjee
 
 
Hii Yes the HC verma is enogh if done properly. Best of Luck
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Sourabh Singh one year ago
 
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RON one year ago
 
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pIYuSh Chauhan 5 months ago
I believe in following one ideal book for each subject for the IIT-JEE preparation. I have HC VERMA for physics, GRB-OP. TANDON for chemistry, DAS GUPTA for maths. but, suggest me a book...
 
 
Dear Jaisson, Yes, das gupta has only subjective problems, i advice you to take M.L Khanna for maths. It contains all models of problems For physics, HCV is the best book you can get for...
 
Rohith Gandhi 6 years ago
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