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May 27, 2015

Homework Help: physics

Posted by mohab on Thursday, October 28, 2010 at 11:04am.

A long solenoid ( radius = 1.4 cm) has a current of a 0.34 A in its winding. A long wire carrying a current of 18 A is parallel to and 1.2 cm from the axis of the solenoid. What is the magnitude of the resulting magnetic field at a point on the axis of the solenoid?
(Hint: What are the directions of the B fields created by the solenoid and the wire?)

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