Finding the poles of different magnets version 1: Application Experiment

Aim

Find the poles of two different magnets by independent methods and check your answer.

Prior Knowledge

• Magnetic fields
• Magnetic force
• Cathode Ray Tube

Description of the Experiment

Watch the first movie to determine the poles of a horse-shoe and a bar magnet. Check your answers by watching the second video.

Addtional Information

Draw a picture of the apparatus in the first experiment with the wire and the horseshoe magnet, determine the direction of the current in the wire and record the direction of the force exerted by the magnet on the wire and then determine the poles of the magnet. For the bar magnet and the oscilloscope, draw the path of the electrons inside the cathode ray tube before the magnet approaches them. Then draw the direction of the force exerted on the electrons by each of the ends of the magnet After that, use the right hand rule to determine the poles of the magnet. Remember the green dot on the front of the oscilloscope is formed by negatively charged electrons.

	Frame rate: 15fps Size: 480 X 360 File Size: 0.75Mb
Please wait or read the page while the movie loads up. (This may take a while.) You will need QuickTime to view the movies. If you want to download the movie to your computer, right-click or control-click HERE.

	Frame rate: 15fps Size: 480 X 360 File Size: 0.30Mb
Please wait or read the page while the movie loads up. (This may take a while.) You will need QuickTime to view the movies. If you want to download the movie to your computer, right-click or control-click HERE.