GATE Electrical Engineering (EE) 2015 Shift 1 Solved Paper

Question : 14 of 65

Marks: +1, -0

Consider a function

f↖{¯} = \;{1}/{r}_{2} r↖{\^}

, where r is the distance from the origin and

r↖{\^}

is the unit vector in the radial direction. The divergence of the function over a sphere of radius R, which includes the origin, is

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