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
Sir what are the chances of seat upgradation in 2 nd or 3 rd round of Jee Adv counselling this year?
 
 
I’m from OBC cat . category rank 1585. and I got Mech in IIT patna in 1 st round.
 
Ashish Kumar Yadav 3 months ago
please tell me the books for mathematics
 
 
Reference Books for Engineering Entrance Exam Chemistry NCERT Chemistry text books of class XI and class XII (usually sufficient) Organic Chemistry by Morrison and Boyd (only for...
  img
Yash Baheti 25 days ago
 
for co-ordinate geometeryand trigo you can buy kc sinha and sl loney, for algebra you can buy hall and knight and kp basu
 
jatinjha 24 days ago
AIR 282000 category rank- 90000
 
 
The link below is IIT JEE Main Branch and College Predictor.You can use it to get the answer to your query. http://www.askiitians.com/iit-jee/main/college-branch-predictor.html Thanks...
  img
Aziz Alam 3 months ago
a mass of 1 kg is thrown with a velocity of 100 m/s. after 5 second it explode into 2 parts. one part of mass 400g move down with25m/s. find the velocity of other part after collision
 
 
Hi, As the mass projected upwards so after five seconds its velocity will be 50 m/s upwards and its momentum will be 50 in upward direction. As the mass explodes and masses are divided into...
  img
Yash Baheti one month ago
My JEE Mains-14 AIR is 1257(general catogory) and JEE Adv.-14 AIR is 4863. I am expecting mechanical eng. in IIT Jodhpur, Indore and in all top NITs. I am confused in chosing the institutes...
 
 
Hi, I think a well established NIT would be good than a newly formed IIT. IIT Gandginagar and IIT Hyderabad can be given preference, but otherwise choose IIIT Hyderabad on top NIT....
  img
Yash Baheti one month ago
Sir, Ps note : I am planning to repeat a year and give iit jee 2015 Can I do self study and only enroll in aits of fiitjee? Or is it really necessary to enroll in some coaching class for...
 
 
Hi, In the current scenario it is very important to join a regular class room. Seeing your location, it is just a waste of time to travel 2 to 3 hours to study in a coaching centre....
  img
Yash Baheti 3 months ago
View all Questions »