PHL 302 Lecture : Nishitani and Rasa 11:25:13.pdf

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What thermodynamic condition must be met for a state of equilibrium to exist?

1. < 0 and > 0
2. < 0 and < 0
3. > 0 and > 0
4. > 0 and < 0

A current of 1.0A
flows along the z axis in the positive z direction from point
(0,0,0) to point (x = 0, y = 0, z = 1:0 m). Find the magnetic field(both
direction and magnitude) created by the current at the followingpoints of
interest.
(a) P1 at (x = 1:0 m, y = 0:0 m, z = -1:0 m)
(b) P2 at (x = 0:0 m, y = 1:0 m, z = 1:0 m)