A wire carrying current has the configuration shown in figure. Two semi-infinite straight sections, each tangent to the same circle, are connected by a circular arc, of angle , along the circumference of the circle, with all sections lying in the same plane. What must (in rad) be in order for to be zero at the centre of circle?
A wire carrying current has the configuration shown in figure. Two semi-infinite straight sections, each tangent to the same circle, are connected by a circular arc, of angle , along the circumference of the circle, with all sections lying in the same plane. What must (in rad) be in order for to be zero at the centre of circle?
(2)
Magnetic field at due to wire 1 is,
and that due to wire 2 is
Magnetic field at the centre due to circular arc subtending angle at the centre is given by
If