183. A point pole having a streng is placed in a magnetic field at a distance of 250 mm from another pole in a What ir and is acted upon by a force of 1.5 N.is the pole strength of the other pole, Wb
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184. e Biot-savart's law is a general modification of
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185. Field strength at the centre of a circular coil of radius r is
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186. The retentivity (a property) of ateial for the construction ofis use
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187. A rectangular magnet of magnetic moment M is cut into two piece of same length , the magnetic moment of each piece will be
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188. Magnetic moment is a
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189. The magneto-motive force is the two
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