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The divergence of the vector field overrightarrow rm A = rm...

This question belongs to Engineering Maths Calculus
Calculus
?

The divergence of the vector field \[\overrightarrow {\rm{A}} = {\rm{x}}{{{\rm{\hat a}}}_{\rm{x}}} + {\rm{y}}{{{\rm{\hat a}}}_{\rm{y}}} + {\rm{z}}{{{\rm{\hat a}}}_{\rm{z}}}\]    is

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Correct Answer: Option D
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