February 23, 2017

Homework Help: Physic please check

Posted by Mary on Monday, November 5, 2007 at 10:09pm.

A piece of copper wire has a resistance per unit length of 6.50 10-3 /m. The wire is wound into a thin, flat coil of many turns that has a radius of 0.170 m. The ends of the wire are connected to a 12.0 V battery. Find the magnetic field strength at the center of the coil.

_________ T

B = (4pi x 10^-7)(12.0) / (6.5 x 10^-3)(4pi (0.170^2))

B = 0.000015082 / 0.002360899

B = 6.39 x 10^-3T

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