An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 172
ing at zero goes up to a maxi-mum and then backto zero in the firsthalf turn; then itreverses, goes to amaximum in the op-posite direction andfinally back to zero. LL~^ P0SITI0N 0F L00P1N DEGREES rpii -it r Fig. 89. — Curve to show relation of induced e.m.f. The induced e.m.f. to position of loop,… … 144 ELECTRICITY AND MAGNETISM are built to deliver alternating currents are called alternatorsor alternating-current (a-c.) generators. Problems 1. A coil of one turn includes 5,000,000 lines of force within itsarea when the plane of its face is at right angles to the lines. If it isturned over at…
Electricity · Magnetism
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