please tell about electric field

3 years ago

Share

Answers : (1)

                                        

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.


PLEASE APPROVE MY ANSWER!!

3 years ago

Post Your Answer

More Questions On IIT JEE Entrance Exam

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
A unit vector in xy-plane that makes an angle of 45(degree) with the vector i(cap)+j(cap) and an angle of tan(inverse)(4/5) with the vector 3(icap)-4(jcap) is...
 
 
Hii Use dot product in each case to find out the magnitude of respective axis values. Two conditions are given and so we have two variables to find out which is very easy to find now Thanks
  img
Sourabh Singh 4 months ago
 
Thankyou........!
 
Pritesh 4 months ago
What is general merit rank and what is category rank.
 
 
Hii If you belong to any other category apart from general you will also recieve a category rank apart from general merit rank. Thanks. .. .. . . ….…. … . . . .. .. ....
  img
Sourabh Singh 2 months ago
 
Hii this means you belong to the general category. Hence you ill only recieve Common Merit Rank. Thanks. . . . … . .. . . . . . . . . .
  img
Sourabh Singh 2 months ago
 
Sir I am brahmin how can i belong to any category then to i got category rank
 
Harsh Kulkarni 2 months ago
I am a foreign citizenship holder.(Tanzanian). Is there a foreigner’s quota for admissions in IIT ? Which IITs give such quota and in which fields ? How much rank is good enough to get...
 
 
Yes of course, there is NRI reservation scheme in IIT-JEE. Please check the prospectus once, You will get whole info.. Good...
  img
Saurabh Kumar 3 months ago
 
@saurabh kumar can u please give the link of the prospectus ? i cant find it oline ? thanks ! -ayush.
 
Ayush Mehta 2 months ago
 
@saurabh kumar can u please give the link of the prospectus ? i cant find it oline ? thanks ! -ayush.
 
Ayush Mehta 2 months ago
Please suggest online learning resource for online chemistry?
 
 
Here are some of the suggested ones: chemwiki, chemguide, chemcollective, http://chemistry-teaching-resources.com/Welcome.html
  img
Sumreet Johar 6 months ago
sir my jaypee noida rank is 3000 . is there a chance of getting IT or cse ???? plz guide thnx in advance
 
 
Hi, Please see the last years opening and cloasing rank for a better idea. For a more precise answer, visit oyr college and branch predictor. Here is the link :...
  img
Yash Baheti 6 months ago
Which are the mos important and scoring topics in PCM to clear iit jee mains and advance?
 
 
Every topic is important. Please do not leave any topic. Maths - Conic sections vectors 3D Physics - Electrostatics magnetostatics mpdern physics Chemistry - organic chemistry Thank BHARAT...
  img
bharat bajaj 8 months ago
View all Questions »