a. both will move toward the left. b. will change in a way not determined by the

Question

         a. both will move toward the left.

         b. will change in a way not determined by the information given.

         c. Will heat up and remain motionless.

         d. will move away from each other.

         e. both will move toward the right

         f. will move toward each other.

part 2 of 2

The magnetic field at the right-post rod due to the current in the rod immediately to its left, is

         a. into the plane of the paper

         b. not determined from information given.

         c. in the plane of the paper poiting left.

         d. in the plane of the paper pointing right.

         e. out of the plane of the paper.

Explanation / Answer

The current in each rod is I = V / R = 3.2 / 2.31 = 1.385 amps The force of the rods on each other is due to their currentsattracting each other! F = (µo /2p ) I I L / r = 2 x 10-7 * 1.385 * 1.385 * 5.7 / 0.18 = = 12.15 x10-6 Newtons and finally, each rod feels this force and they have the samemass so they have the same acceleration. a = F / m = 12.15 x10-6 / 0.0012 = 0.0101 m/s2

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