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Equipment provided for the session

Measuring the magnetic flux around a straight rod with a current through it

Equpiment needed to measure the magnetic flux around a current carrying loop

Biot Savart Law

In this session you will have:

Measured magnetic fields using a Gaussmeter


Verified the Biot Savart Law


Determined the permeability of free space


Kept an appropriate set of laboratory notes


The Biot Savart Law can be used to determine the magnetic field due to an arbitrary current. However, in practice only a few special cases have simple analytic solutions of which we will consider two: the field from a straight conductor; and the field along the axis of a circular loop. In this laboratory activity, we will test the Biot-Savart law and use it to determine the physical constant, μ0 (permeability of free space).


The script for this experiment can be found in the lab script book or on DUO.