A square loop, carrying a steady current $I$ , is placed in a horizontal plane near a long straight conductor carrying a steady current $I_{1}$ at a distance $d$ from the conductor as shown in figure. The loop will experience:

Question

Smart Achievers · Accepted Answer

(1)

$Here \vec{τ} = \vec{M} \times \vec{B} = \vec{O} (∵ \vec{M} ↑ ↑ \vec{B}),$ $Also parallel currents attract each other.$

Solution

Q.
A square loop, carrying a steady current $I$ , is placed in a horizontal plane near a long straight conductor carrying a steady current $I_{1}$ at a distance $d$ from the conductor as shown in figure. The loop will experience:

1 A net attractive force towards the conductor

2 A net repulsive force away from the conductor

3 A net torque acting upward perpendicular to the horizontal plane

4 A net torque acting downward normal to the horizontal plane

Ans.
(1)

$Here \vec{τ} = \vec{M} \times \vec{B} = \vec{O} (∵ \vec{M} ↑ ↑ \vec{B}),$ $Also parallel currents attract each other.$

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