Sunday, May 11, 2014

Motors Make the World go Round

In this lab, we constructed a motor using a battery, a coil of wire, a paperclip, and a magnet. Each had their own function in making the motor function properly.
Battery: power source for the motor
Coil of wire: carries the charges and acts as a circuit connector
Paperclip: creates a domain that allows the current to continue the run through it
Magnet: provides a North and South pole for the current to flow through

To make the motor work, we had to strip both ends of the coil. We did this because the current was flowing out of the North pole of the magnet, going up towards the motor loop and through the coil ends into the paper clips, then back around to the South pole of the magnet. The motor turned because of the magnetic pull created by the magnet. This is because all the charges in the wire were moving the same way, but since the wire was coiled, the current would technically be in different directions. The vertical loop felt the force of the magnet in opposite directions on the top and the bottom sides so there was a torque on both ends of the wire, causing it to rotate. If the loop was horizontal, it would not feel this force in a perpendicular way and there would be no rotation. 

The motor is very small, in fact to small to power anything, therefore, we used this motor only for educational purposes. 

Here is a video of our motor working in action:

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