Understanding Electric Field Lines: The Truth About Infinity Explained

[Misr]

Hello
The electric field lines comes out from a positive charge towards infinity (towards the equal negative charge)..
Oops ! confused again bout infinity
Why is this true?
Thanks

 

[LostConjugate]

It is true because it is measured. All of classical physics takes the electric field as a given based on measurements. Quantum Field Theory attempts to explain the mechanism.

 

[Misr]

It is not that sophisticated its a simple question
What is the definition of infinity in this case??
also why does the +ve charge move in the direction of electric field while -ve one moves opposite to the direction of electric field?

 

[Born2bwire]

It is not that sophisticated its a simple question
What is the definition of infinity in this case??
also why does the +ve charge move in the direction of electric field while -ve one moves opposite to the direction of electric field?

*shrug* Infinity is the limit of the volume of space increasing to infinite volume. You can do this in a variety of ways. Take a sphere and take the limit of the sphere's radius to infinity for example. For this problem it shouldn't matter how you do it as the limiting cases should be the same.

The electric field is a field that applies a force on a test charge, specifically it is qE (E is a vector here) as given by the Lorentz force. Since positive and negative charges have opposite signs, the direction of the force is opposite.

 

[sardar]

for your question! The concept of infinity can be a bit confusing, but it is an important aspect of understanding electric field lines. In the case of electric fields, infinity represents an infinitely large distance away from the charges. This means that as the distance from the charges increases, the strength of the electric field decreases. This is why the electric field lines extend towards infinity: they are showing the direction and strength of the electric field at different distances from the charges. It is important to remember that while the electric field lines may extend towards infinity, they do not actually reach it as infinity is not a physical distance. Instead, the lines serve as a visual representation of the electric field and help us understand its behavior. I hope this helps clarify the concept of infinity in relation to electric field lines.