Electricity and magnetism for advanced students (1920)
Starling, Sydney George, 1873- · London Longmans, Green · leaf 258
strument is sometimes designed for use as a wattmeter ; the fixed coil having a great many turns of fine wire to ensure a high resistance. The low resistance coil is then placed in series with the circuit, the power Fig. 247. absorbed in which it is required to measure, and the high resistance coil… … y Thus the power absorbed in the circuit is directly proportional tothe twist in the spring necessary to maintain the moveable coil inequilibiium at its zero position. Electromagnetic Induction.—While attempting to find out whethera steady current produces another in neighbouring circuits, in…
Electricity · Magnetism
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