Magnetic Field

This lab student were trying to understand how a magnetic field works. 

In this photo we can see that the magnetic field travels from South to North; if we look at one battery, we can see that the South pole would be the positive terminal, and the North would be the negative terminal.  

In this photo we can see that how it the magnetic field flows. Although the picture shows from North to South, actually it works the other way around. As the calculated the flux for the electric field, here we can also calculate the flux for the magnetic field, where indeed is equal to zero because what goes out, must come in. 

We also found that force on a magnetic field is calculated using the crux product in which the charge (B) is perpendicular to a constant K and the electric potential of the system; and as we can see it, the force acting on an electron, is always perpendicular to the direction where the electron is moving. The photo also gives information that the work done on a close loop will always be zero because the electron will return to its initial point. It can be seen as being the same as saying that the particle has never abandon its place.   

This photo shows that the velocity can be calculated in terms of angular velocity. And the force can be found using the intensity and the length in which the electron has follow. Applying the differential equation in both sides, we can see that the charge is constant as well as the intensity. But the force and the length will always change because the electron will never be in at the same distance throughout its travel within the magnetic field.