appears to flow anticlockwise [Fig. 1.06(a)], acts as On the other hand, if the current appears to flow loop in clockwise direction [Fig. 1.06 (b)], then the face pole. In both the cases, the magnetic field at the centre along normal to the plane of the loop. Problem. 1.01. The plane of a circular coil is horizontal. It has 10 turns, each of 8 cm radius. A current of 2 A flows through it, which appears clockwise from a point vertically above it. Find the magnitude and direction of the magnetic field at the centre of the coil due to the current. Sol. Here, n = 10; a = 8 cm = 0·08 m;I = 2 A We know, Mo = 10-7 Wb A-1m-1 4 T
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