A loop with current l Is in the field of a long straight wire with current l_(0).The plane of the loop is perpendicular to the straight wire.Find torque acting on the loop.

A loop with current l Is in the field of a long straight wire with cur

1.	A loop with current l Is in the field of a long straight wire with current l_(0).The plane of the loop is perpendicular to the straight wire.Find torque acting on the loop.
Answer» Solution :`dvecs=(rd0dr)` , (INWARDS) `dM=(rId0dr)` , (inwards) `vecB=(mu_(0)l_(0))/(2pir)` , (tangential clockwise) `dpi=\|dvecMxxvecB\|=(mu_(0)II_(0)d0dr)/(2PI)` , (TOWARDS centre) `:.tau=underset(-alpha)overset(alpha)intunderset(a)overset(b)intdrcos theta` `=(mu_(0)ll_(0))/(2pi)underset(-alpha)overset(alpha)intunderset(a)overset(b)intcos theta d theta dr` `(mu_(0)II_(0)(b-a)sin alpha)/pi ` , (to the left)

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A loop with current l Is in the field of a long straight wire with current l_(0).The plane of the loop is perpendicular to the straight wire.Find torque acting on the loop.

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