Bolg #20

5/12/2014 Monday

Magnetic motor apparatus setup. The direction of its spin, clockwise or counterclockwise depends on the whether its N-S or S-N polar respectively pointing at the end of the motor. The motor will not spin if its pointing on the same polar. Also the speed of the spin varies with the voltage applied, higher the voltage the faster it can spin.

Simpler version of magnetic motor setup. A wire coated with insulating paint was wrapped around a marker to make a simple coil as a motor. Similar to the bigger apparatus, the higher the voltage is the faster the motor will spin the only obvious difference is the use of one magnet instead of two. This setup was a little difficult since it took us many trials to get the setup working properly.

Rod-compass demonstration. Current was run to the rod creating a magnetic field. By having the magnetic field around the rod it interfered with the earth's magnetic force so the compasses turned its needle in the direction of the field. If the compasses are placed further away from the this point shown in the picture, there is less magnetic force around the compasses causing less interference. On the other hand, if its placed closer to the rod it will have more magnetic force around the compasses causing greater interference.