A relatively inexpensive ammeter called a tangent galvanometer can be made using the earth's field. A plane
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A relatively inexpensive ammeter called a tangent galvanometer can be made using the earth's field. A plane circular coil of N turns and radius R is oriented such that the field Bc it produces in the center of the coil is either east or west. A compass is placed at the center of the coil. When there is no current in the coil, the compass needle points north. When there is a current I, the compass needle points in the direction of the resultant magnetic field B at an angle ? to the north. Show that the current I is related to ? and the horizontal component of the earth's field Be by
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Fundamentals of Ethics for Scientists and Engineers
ISBN: 978-0195134889
1st Edition
Authors: Edmund G. Seebauer, Robert L. Barry
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