Chemical Engineering > GATE 2015 > Vector Calculus
A vector u = -2y î + 2x ĵ, where î and ĵ are unit vectors in x and y directions, respectively. Evaluate the line integral I = ∮ u · dr where C is a closed loop formed by connecting points (1,1), (3,1), (3,2) and (1,2) in that order. The value of I is _______.
Correct : 8
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