7May2014

Direction Around Magnet

A Magnet was place in the middle of a circle with the N and S poles labeled. The direction that the red arrow was pointing as it was moved around the magnet was labeled. We had the result that the North side of the magnet pointed away from the the north-side and goes all the way around to the South side of the magnet. This indicated that the red end of the compass needle is North and that is why it pointed toward the south. 

Magnetic Field Lines Around a Magnet

We wanted to determine how the magnetic field lines appear so we took a very large magnet with both a North and South Pole at the ends and sprinkled a bunch of Iron fillings on it. We can see that at the poles the magnetic field lines point out and curve around in a circular pattern.

Here is a diagram of what we saw in the previous picture.  

Using this picture we were about to conclude at what location the magnetic field is zero or where it adds. As you can see when the amount of field lines enter a circle and exit in equal quantities the magnetic field is zero. This is similar to what we saw in a electrical field. 

Metal Bar Experiment

Applying a Current of 11.5A to a magnet and placing a metal bar inside the magnet in order to calculate its displace and eventually determining the magnitude of the magnetic field. 

Using the time to took for the metal copper rod to travel distance of the board we were able to calculate the magnetic field to be 2.5*10^-3 Tesla.