Question

Two wires are located at (x,y) = (a,0) and (x,y) = (-2,0) and extend in the z direction. Each carries a current given by 1 = 1k. Which of the following is (are) true? Hint: draw a sketch of the two wires and recall RHR. a) The magnetic field at the origin is not zero and points in the positive y direction. b) The wires tend to repel each other. y c) The force per unit length on one of the wires is proportional to 12. d) Exactly two of a-c. e) None of the ab +Z out of screen X

Answer 1

Io Give I = tok ; Assuming it as out of Pa® : using Right Hand Rule! is Bat origin due to wire 1 Y I 2 T O Dut to second wire a t's M1, 2 T o Net Magnetifield is at 3 ero origin. using Left hand rule {fleaming's) (-a, o ) Fonce on (1o) at OR ( ID) at (a,0) EL is as f force shown in figure. They Hract each other ther

17) 113101) 13 = from 1) B I. 2 TT (24) Biot savaits now 2 T) MCI 2M(2a) Force 2) unit degth per unit so false Option A, B t rue