A wire carrying current I is laid in shape of a curve which is represented in plane polar co- ordinate system as r = b + c/ pitheta for 0 lttheta lt pi/2 Here b and c are positive constants. theta is the angle measured with respect to positive x direction in anticlockwise sense and r is distance from origin (see figure). Calculate the magnetic field at the origin due to the wire.

A wire carrying current I is laid in shape of a curve which is represe

1.	A wire carrying current I is laid in shape of a curve which is represented in plane polar co- ordinate system as r = b + c/ pitheta for 0 lttheta lt pi/2 Here b and c are positive constants. theta is the angle measured with respect to positive x direction in anticlockwise sense and r is distance from origin (see figure). Calculate the magnetic field at the origin due to the wire.
Answer» ANSWER :`(mu_(0)I)/(4C) L n(1+c/(2B))odot`

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