Physics, asked by Soumya5887, 1 year ago

Electric field intensity at point is same or diff??

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Answered by babu1435
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Thus, electric field is the force field created by a static charge. It is a vector quantity. Thus, it must have magnitude as well as direction. Electric Field Intensity at a particular point in space is defined as the force on a unit test charge
Answered by Anonymous
0
DIFFERENCE :--

Thus, electric field is the force field created by a static charge. It is a vector quantity. Thus, it must have magnitude as well as direction. Electric Field Intensity at a particular point in space is defined as the force on a unit test charge
Both of these terms are often used in place of each other. We do it quite nonchalantly. However, there exists a minute difference between these words. Electric field is used to describe a region of energy present around charges. A more thorough and quantitative definition is easily available on the net. There is no notation as such to represent electric field.

However, when we talk about electric field intensity, we are actually describing the vector aspect of an electric field. That is we are talking about the magnitude and the direction of it. Electric field intensity is usually denoted by E (With an arrow mark on the top).

Relationship:--
The strength of electric field at a particular point is called as Electric Field intensity. In other words, the force felt by a unit positive charge situated at a point is called Electric field intensity. If  is the force working on a test charge q0 at any point r, then the electric field intensity due to this will be:


Electric field intensity is a vector quantity means it has magnitude as well as direction. The direction of  is similar to that of  means  is in the similar direction in which the test charge q 0 tends to go.

Newton per coulomb is the S.I. unit of Electric field intensity. Electric field  is generated by a source charge placed anywhere. The charge present at source can be a combination of a no. of different charges or it may be a single charge or any continuous distribution of charge. The test charge +q 0 can have its self electric field, which have the ability to modify the electric field of the charge present at source. So, to reduce or remove its effect, we will write the equation of electric field intensity in some different way.

 ————-2.1
As we know that the charge  is inversely proportional to the electric field intensity 
So as we increase the charge electric field intensity decreases. Due to the charges having individual nature the minimum value of charge is 1.6 X 10 -19 coulomb. The value of charge can never be zero.
The major importance and use of electric field is that, it can be used to calculate the direction and magnitude of the force felt by a charge present at a particular point affected by electric field. The equation showing the above result is given below:
 ———- 2.2
Note: The direction of electric field intensity is same as that of direction of force applied on a positive charge.


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