A solenoid is made from a 25 -m llength of wire of resistivity 2.3x10-80.m. The wire, whose radius is 2.2 mm , is wrapped uniformly onto a plastic tube 4.5 cm in diameter and 1.66 m long. Find the emf to which the ends of the wire must be connected to produce a magnetic field of 1.4x10-2T within the solenoid.
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