Physics Report Sem 3 Ppismp
Group member’s name: Annie Wong Ai Yuan Huong Sing Yi Kee Guan Yang Teh Boon Chuan Tham Hua Yuan
Class: 3 PPISMP SN/PI/PC
Experiment 9
Topic
Magnetics field
Purpose
To study the behavior of a bar magnet in varying magnetic fields at the end of a solenoid and hence estimate the horizontal component BH of the Earth’s magnetic fields.
Theory
A magnet is an object that can exert a magnetic force to any object around it. When a ferrous object is placed near it, the magnetic force will attract it towards the magnet. The magnetic force forms a magnetic field around the magnet which is invisible to human naked eye. When two magnetic fields from two different magnets meet, attraction or repulsion will occur between the magnets according to the pole of the magnetic fields. [pic] From the diagram, we can see that the magnetic field has a direction. The magnetic force come out from the N pole and goes to the S pole. There are no distinguished lines which separate the N and S pole in a magnet. One part of the magnet will always be N and the other will always be S. When hanged freely in the air, a bar magnet will always pointed to a fixed direction even with the absence of other magnet in the surrounding. This is because our earth behaves like a magnet and has a magnetic field of its own. This also means the magnetic field of the earth has a N and S pole as well.
[pic]
Since a magnetic field always start from the pole and head toward the S pole, the magnetic field of the earth will affect a freely hanged bar magnet and cause it to point to a fixed position. The N pole of a magnet will always point to the S pole of the earth if there are no any other forces involve. The continuous production of magnetic field from the earth can be explained with the Dynamo Theory. When conducting fluid flows
Class: 3 PPISMP SN/PI/PC
Experiment 9
Topic
Magnetics field
Purpose
To study the behavior of a bar magnet in varying magnetic fields at the end of a solenoid and hence estimate the horizontal component BH of the Earth’s magnetic fields.
Theory
A magnet is an object that can exert a magnetic force to any object around it. When a ferrous object is placed near it, the magnetic force will attract it towards the magnet. The magnetic force forms a magnetic field around the magnet which is invisible to human naked eye. When two magnetic fields from two different magnets meet, attraction or repulsion will occur between the magnets according to the pole of the magnetic fields. [pic] From the diagram, we can see that the magnetic field has a direction. The magnetic force come out from the N pole and goes to the S pole. There are no distinguished lines which separate the N and S pole in a magnet. One part of the magnet will always be N and the other will always be S. When hanged freely in the air, a bar magnet will always pointed to a fixed direction even with the absence of other magnet in the surrounding. This is because our earth behaves like a magnet and has a magnetic field of its own. This also means the magnetic field of the earth has a N and S pole as well.
[pic]
Since a magnetic field always start from the pole and head toward the S pole, the magnetic field of the earth will affect a freely hanged bar magnet and cause it to point to a fixed position. The N pole of a magnet will always point to the S pole of the earth if there are no any other forces involve. The continuous production of magnetic field from the earth can be explained with the Dynamo Theory. When conducting fluid flows