A horizontal wire AB of length T and mass 'm' carries a steady current I_1 free to move in vertical plane is in equilibrium at a height of 'h' over another parallel long wire CD carrying a steady current I_2 which is fixed in a horizontal plane as shown. Derive the expression for the force acting per unit length on the wire AB and write the condition for which wire AB is in equilibrium.

A horizontal wire AB of length T and mass 'm' carries a steady current

1.	A horizontal wire AB of length T and mass 'm' carries a steady current I_1 free to move in vertical plane is in equilibrium at a height of 'h' over another parallel long wire CD carrying a steady current I_2 which is fixed in a horizontal plane as shown. Derive the expression for the force acting per unit length on the wire AB and write the condition for which wire AB is in equilibrium.
Answer» Answer :Diagram for MAGNETIC FIELD LINES Cu-diamagnetic FE- Ferromagnetic

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