Electricity and magnetism for advanced students (1920)
Starling, Sydney George, 1873- · London Longmans, Green · leaf 253
Fig. 240. … Fig. 241. together. When the currents are in opposite directions (Fig. 241),there are no tubes of force surrounding both wires, and since they aremore crowded in the space between the wires than in that outside, thelateral pressures of the tubes will urge the wires apart. Coaxial Coils.—(i) For two…
Electricity · Magnetism
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