(a) A long straight wire carries a current I into the plane of the figure. AB is a straight line in the plane of the figure subtending an angle thetae point of intersection of the wire with the plane. Find (by integration) the line integral of magnetic field along the line AB. (b) In the last problem the straight line AB is replaced with a curved line AB as shown in figure. Can you calculate the line integral of magnetic field B along this curved line? If yes, what is its value?

(a) A long straight wire carries a current I into the plane of the fig

1.	(a) A long straight wire carries a current I into the plane of the figure. AB is a straight line in the plane of the figure subtending an angle thetae point of intersection of the wire with the plane. Find (by integration) the line integral of magnetic field along the line AB. (b) In the last problem the straight line AB is replaced with a curved line AB as shown in figure. Can you calculate the line integral of magnetic field B along this curved line? If yes, what is its value?
Answer» Answer :`(a)theta/(2pi)mu_(0)I` (b)YES,LINE INTEGRAL is `theta/(2pi)mu_(0)I`

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