#### A square loop, carrying a steady current I, is placed in a horizontal plane near a long straight conductor carrying a steady current  at a distance d from the conductor as shown in the figure. The loop will experience Option 1) A net repulsive force away from the conductor Option 2) A net torque acting upward perpendicular to the horizontal plane Option 3) A net torque acting downward normal to the horizontal plane Option 4) A net attractive force towards the conductor

Force between two parallel current carrying conductors -

- wherein

I1 and I2 current carrying two parallel wires

a-seperation between two wires

Since magnetic moment and field both are parallel hence torque=0

But there will be an attractive force becuase of parallel current between wire and loop will attract more than repulsive force between anti parallel currents

Option 1)

A net repulsive force away from the conductor

This solution is incorrect

Option 2)

A net torque acting upward perpendicular to the horizontal plane

This solution is incorrect

Option 3)

A net torque acting downward normal to the horizontal plane

This solution is incorrect

Option 4)

A net attractive force towards the conductor

This solution is correct