1.

A straight current carrying wire has current I directed into the plane of the fig. There is a line AB of length 2a at a distance a from the wire (see fig.). Find the value of lineintegralint_(A)^(B)vec(B).vec(dl)where vec(B) represents magnetic field at a point due to current I. Will the value of integral change if a is changed? Length of line AB is always double that of a.

Answer»


ANSWER :`-(mu_(0)I)/4;No`


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