General Aim of Magnetic Moment of a Bar Magnet
Determining the magnetic moment of a magnet.
Magnetic Moment of a Bar Magnet Method
Deflection of magnetometer.
Learning Objectives of Magnetic Moment of a Bar Magnet
By the end of this experiment, the student should be able to: Explain the operation of the tangent galvanometer.
Set up an experiment to study the magnetic properties of a bar magnet.
Determine the value of the pole strength of a bar magnet.
Theory of Magnetic Moment of a Bar Magnet
If a bar magnet far from the tangent galvanometer, the only significant magnetic field acting on the magnetized disk will be the horizontal component of the earth's field H0. Accordingly, if the bar magnet is placed on the meter stick, the resultant field at the center of the magnetometer is the vector sum of both fields. In this case, the magnetic moment formula is:
Magnetic Moment of a Magnet Principle
Magnetic moment of a bar magnet experiment depends on adjusting the distance between the center of the bar magnet to the center of the tangent galvanometer to some distances and recording the deflection angle for both polarities of the magnet on the two sides of the tangent galvanometer.
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