80. In the coil length l = 0,40 m and a diameter D = 6,0 cm and the number of turns N = 1,000 wearing tight ring of copper wire (ρ = 16 nom • m) section S = 2,0 mm2. The current in the coil increases evenly at a rate dI / dt = 0,30 A / s. Determine current strength Ik ring.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
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