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PRECISION OF MEASUREMENTS
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0.1 per cent accuracy adjustment amount amperes angle approx approximate arithmetical mean armature average deviation axis belt belt-pull best magnitudes best ratio best value calorimeter centre Clark cell coil computed constant error correction corresponding deduced deflection denote determined deviation measure direct measurement dynamo equal effects equation estimate Example field resistance find the best follows formula fractional precision function gives Hence horizontal indirect inspection labor law of deviations law of tangents limit load magnitude conditions measured components method minimum mirror moment of inertia motor needle negligible obtained ohms precision conditions precision discussion precision measure problem quantities reading rejection residual error resistance resultant effect rheostat rth place sensibly significant figures single observation solution solve sources of error specific gravity stray power substituting Suppose tangent galvanometer temperature tion torsion variable vertical voltage voltmeter volts weight zero