electrostatics - Why is electric field strong at sharp edges?
2012年10月30日 · The electric field gradient is the rate at which the electric field falls off, and it is strongest on such edges and lines and points. You can use the gym analogy to see why that is. Imagine the mutual disdain of the students for each other as behaving like spooky spiky hair that extends ghost-like for many meters out from each student.
Why is electric field lines away from (+) and toward (-)?
2016年10月22日 · The electric field lines extend away from a positive charge They move forward a negative charge Let's take parallel plates, which make a uniform electric field.If we take the basic learning , which I mentioned, in accounts, it's very easy to understand that this is the direction of a positive charge object if we put the object between the plate ...
Why can two (or more) electric field lines never cross?
The electric field at any point is the sum of all the fields due to each individual charge in the system. The field has a magnitude and a direction. The field lines are a representation of the magnitude and direction of the field over an illustrated area. The field lines point in …
Why can't electrostatic field lines form closed loops?
So, this is another reason why electric field lines can't form closed loops. The magnetic field lines of a magnet form continuous closed loops, this is unlike electric dipole where the field lines begin from a positive charge and end on the negative charge or escape to infinity. Field lines of a bar magnet. Field lines of an electric dipole.
Why do electric field lines curve at the edges of a uniform electric ...
2020年9月7日 · $\begingroup$ Each positive charge in the left plate creates an electric field radially outward away from it, and the total field produced by the plate is the vector sum of each of these individual fields (plus those of the negative charges, but let's focus on the positive ones). At points near the middle of the plate, the charges above it and ...
Electric field lines can be taken as continuous curves in a charge …
2017年3月11日 · By convention, electric field lines are said to start from a positive charge and end at a negative charge. As you can see in the above figure, the field lines come to an abrupt stop at the surface of the charge. When there isn't any charge, the electric field lines must be continuous. The only place where they can start or end is at a charge.
Continuity of Electric Field Lines - Physics Stack Exchange
2016年12月30日 · A quantity of electric flux can be represented by a field line. If the net flux in/out of a volume is zero, then the number of field lines going in equals the number of field lines coming out. This will equally be true for any smaller subset of a chargeless volume, so the field lines are simply continuous.
electromagnetism - Why does the density of electric field lines …
Other field lines represent other useful information, like electric field lines represents the motion of a free charge if it were placed on that line (if no other forces were to act on it). Or gravitational field lines representing lines of equal gravitational potential.
Electric field lines properties - Physics Stack Exchange
2019年1月18日 · Field lines are a graphical representation of a vector field (you can draw as many lines as you like). In a well drawn three dimensional sketch, the line density will be proportional to the field strength in each region. Electric field lines should start and end on charges with the number of lines proportional to the charge.
What do electric field lines tell us? - Physics Stack Exchange
2023年3月8日 · An electric field line is a line whose direction at every point along it is the direction of the electric field, $\mathbf E$, at that point. This means that a positive charged particle (such as a proton) at a point P in an electric field will experience a force in the direction of the field line through P. But if the field line is curved, a ...