Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 72
e on each pole due to the Fig. 48 earths field is equal to m.h and acts parallel to the plane of the coil. Under the action of these two forces the needle comes to rest at an angle a to the plane of the coil. The component of the force due to the earth, acting at right angles to the needle, is AB =… … Cancelling m out from each side of the equation, we see that the reading ofthe galvanometer is quite independent of the strength or size of the mag-netic needle. Solving the above equation for I, we have I = tan a 27r •(37)- Since the number of amperes is 10 times the number of absolute unitswe…
Electrical engineering
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