After the introduction of electric fields in different situations but mostly were the fields are constant. The purpose of the experiment was to find why we use the equation we do to find the flux of an equation. We also saw how the electric fields interact with either by themselves or with another charge, showing that they repel or attract. When two charges are enclosed in a surface with like charges reveals that the net charge is zero and the flux is also zero. In order to see these affects of the charges the labs were doing activities on websites like Active Physics that put different charges inside a surface or moved out of it and see how to flux is affected. Another part of the experiment was to see the angle, electrostatic force, and the area also can find the flux and finding the relationship with a graph by finding angles and the surface area.
The following images are the activity done on an application by Caltech to view the interactions of charges:
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| This the image of one charge in an electric field having the number of lines changing with amount of charge is being added to the field. In this case the electric field lines show ten lines coming from a positive 2 charge and changing as we reduce or increased the charge number. |
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| The interaction of the field when two opposite charges are placed next to each other showing how th middle lines between start to curve up and dense up. They add lines because one charge has 5 lines so when put to a negative one's lines they created ten lines. |
This is the answers of the lab manual pertaining to the electric fields and came to the conclusion of the lines signify the magnitude of the attraction between two charges. And the direction of the lines represent the direction of the electric fields.
The second part of the experiment was using an area to now introduce the flux with electric fields and angles by trying to find the certain angle to cover a specific area. And came to the conclusion the angle increases every time to find a lesser amount of area which was the number of nails.
This is the lab equipment used to find the relationship between the angle of the wire and the number of the nails in the wire which was the flux. In the end we want to find a relationship between the two to find an equation E*A*cos theta.
After the input of the data points pertaining to the number of nails(flux) and the angle to come out with a graph that looks like a cosine graph. When it came to find the negative number of nails it is the same angle as the positive one.
The next part of the experiment was using active physics to see the interactions the electric force, the charge and the area being enclosed.
This is a positive charge in the oval showing that there is flux but there is no force in the system of the activity. It also shows the electric field pointing away from the charge and circle.
However when two opposite charges are placed inside the enclosed area they end up canceling each other out resulting in the net charge indie being zero. With the flux is also being zero because they cancel each other inside the surface and the electric force is also zero.
This is the calculations and conclusions the group came up with following the experiment to find the q enclosed. One conclusion we stated to be important was that the flux is directly proportional to the net charge inside the area. And the equation of the due this experiment is qenclosed/epsilon0=integral of EdA.
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