The magnetic field at the centre of a current carrying loop of radius 0.1 m is times that at a point along its axis. The distance of this point from the centre of the loop is
0.1 m
0.2 m
0.05 m
0.25 m
A wire carrying currenti is shaped as shown. Section AB is a quarter circle of radius r. The magnetic field is directed
perpendicular to the plane of the paper and directed into the paper
at an angle to the plane of the paper
along the bisector of the angle ACB away from AB
along the bisector of ACB towards AB
The wire loop formed by joining two semicircular sections of radii R1 and R2 and centre C, carries a current I as shown. The magnetic field at C has a magnitude
B.
Magnetic field at C due to AB and DE = zero
Magnetic field due to semicircular arc
Magnetic field due to semicircular arc