Physics II Lab w answers_Part_48

Physics II Lab w answers_Part_48 - 107 Experiment 17 Study...

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Unformatted text preview: 107 Experiment 17 Study of magnetic field along the axis of a coil Apparatus: Circular coil, power supply, switching keys, magnetic needle, sliding compass box etc. Objective To measure the magnetic field along the axis of a circular coil and verify Biot-Savart law. Theory For a circular coil of a n turns, carrying a current I, the magnetic field at a distance x from the coil and along the axis of the coil is given by ( ) 2 3 2 2 2 1 2 ) ( x R nIR x B + = (1) where R is the radius of the coil. In this experiment, the coil is oriented such that the plane of the coil is vertical and parallel to the north-south direction. The axis of the coil is parallel to the east-west direction . The net field at any point x along the axis, is the vector sum of the fields due to the coil B(x) and earth s magnetic field B E (Fig 1). E B x B ) ( tan = B E B(x) Fig 1. Procedure The appratus consists of a coil mounted perpendicular to the base. A sliding compus box is mounted on aluminium rails so that the compus is always on the axis of the coil. mounted on aluminium rails so that the compus is always on the axis of the coil....
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Physics II Lab w answers_Part_48 - 107 Experiment 17 Study...

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