A wire \( A B \) iscarrying a steady current of 12 Aand is lying on...

A wire \( A B \) iscarrying a steady current of 12 Aand is lying on the table. Another wire \( C D \) carrying 5 A is held directly above \( \mathrm{AB} \) at a height of \( 1 \mathrm{~mm} \). Find the mass per unit length of the wire \( C D \) so that it
P remains suspended at its position when left free. Give the direction of the current flowing in \( C D \) with

W. respect to that in \( A B \). [Take the value of \( g=10 \mathrm{~ms}^{-2} \) ]