Question

A horizontal length of current-carrying wire is suspended from two identical flexible leads that are under tension due to the weight of the wire. The wire is oriented at right angles to a uniform magnetic field that has a magnitude of 2.5T and is directed into the screen of the figure. The length L of the wire is 5 cm and its mass m is 10 g. What current will produce a magnetic force on the wire that is just sufficient to remove the tension in the flexible leads, and which way is the current flowing through the wire? Current-carrying wire suspended from identical flexible leads B® magnetic field (into the screen) Ceiling I, current-carrying wire L

Answer 1

Icha my In ille FB L mg P ce FB = idB So, il B = mg " xo.osx 4 = (lox163x0.8) 2 ( 0.2 SA from right hand thonbrule (righ to left CS Scanned with Cam Scanner