A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 859
re, l=-2irnr, hence, 2-nri 2irni where r is in centimetres and i in units of current. The tangent galvanometer.—From the preceding discussion we seethat the measurement of electric current depends upon the measure-ment of magnetic field. For the measurement of magnetic field the magnetometer was… … magneto- FlQ. 776.—The tangent galvanometer. A vertical circular coil AB(Fig. 776) carries the current,and this produces a magnetic field of strength 2-ni i\ at the centre,the direction of Held heing at right angles to the plane of the circle.The plane of the circle is therefore placed in the…
Physics
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