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23 Nov 2019
a long circular pipe with outside radius carries a (uniformlydistributed) current into the page. A wire runs parallel to thepipe at a distance of from center to center. Find the (a) magnitudeand (b) direction (into or out of the page) of the current in thewire such that the net magnetic field at point P has the samemagnitude as the net magnetic field at the center of the pipe butis in the opposite direction.
a long circular pipe with outside radius carries a (uniformlydistributed) current into the page. A wire runs parallel to thepipe at a distance of from center to center. Find the (a) magnitudeand (b) direction (into or out of the page) of the current in thewire such that the net magnetic field at point P has the samemagnitude as the net magnetic field at the center of the pipe butis in the opposite direction.
