- #1
peyo
- 7
- 0
Hi, Kinda new here so here goes.
I have been asked to drawn a graph B(magnetic field) vs Tan theata and find its slope, ok no problem there. The next question has asked me to use the value of the slope to obtain the value of the strength of the Earth's magnetic field in the region .
The context of the question is this:
There is a wire running north south along the Earth's magnetic field, 1cm above the wire is a needle that points to magnetic north when there is no current running along the wire. When current flows through the wire (northward) the needle deflects to the east, various different strength currents are passed through the wire and the angle of defection is recorded in a table along with the strength of the field in (microT), this table is then graphed and the slope obtained.
All that has been done, I've read the rulles and am not really looking for an answer more a method as I am drawing a blank. Any help would be greatly appreciated.
cheers
I have been asked to drawn a graph B(magnetic field) vs Tan theata and find its slope, ok no problem there. The next question has asked me to use the value of the slope to obtain the value of the strength of the Earth's magnetic field in the region .
The context of the question is this:
There is a wire running north south along the Earth's magnetic field, 1cm above the wire is a needle that points to magnetic north when there is no current running along the wire. When current flows through the wire (northward) the needle deflects to the east, various different strength currents are passed through the wire and the angle of defection is recorded in a table along with the strength of the field in (microT), this table is then graphed and the slope obtained.
All that has been done, I've read the rulles and am not really looking for an answer more a method as I am drawing a blank. Any help would be greatly appreciated.
cheers