Divergence of the three-dimensional radial vector field

1.	Divergence of the three-dimensional radial vector field
A.	3
B.	1 / r
C.	<img src="http://images.interviewmania.com/wp-content/uploads/2019/11/as-773.jpg">
D.	<img src="http://images.interviewmania.com/wp-content/uploads/2019/11/as-774.jpg">
Answer» B. 1 / r

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Divergence of the three-dimensional radial vector field

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