A coil of wire of 40 m length and a cross section of 2 mm ^ 2 is connected to a current source with an EMF of 12 V and an internal resistance of 2 Ohms. The specific resistance of the conductor material is 5 * 10 ^ -7 Ohm * cm. Find: specific thermal current power; current density and field strength in the wire; the amount of heat released in 1 cm ^ 3 wires in one minute.
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