Two long, straight wires, each with a current of 12.0 A, are placed on two corners of an equilateral triangle with sides of length 2.50 cm as shown. Both of the wires have a current into the page.
(a) What is the magnetic field at the third corner of the triangle?
(b) Another wire is placed at the third corner, parallel to the other two wires. Which direction should current flow in the third wire so that the force on it is in the + y -direction.
(c) If the third wire has a linear mass density of 0.150 g/m, what current should it have so that the magnetic force on the wire is equal in magnitude to the gravitational force, and the third wire can "hover" above the other two?

Transcribed Image Text:

2.50 cm/ 12.50 cm 2.50 cm