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Divergence & Curl of vector field Video Lecture | Mathematics for Competitive Exams

FAQs on Divergence & Curl of vector field Video Lecture - Mathematics for Competitive Exams

1. What is the divergence of a vector field?
Ans. The divergence of a vector field is a scalar quantity that measures the rate at which the vector field's flow is spreading or converging at a particular point. It is calculated using the dot product of the vector field with the del operator (∇).
2. How is the divergence of a vector field calculated?
Ans. The divergence of a vector field F = (F₁, F₂, F₃) is calculated using the formula ∇ · F = ∂F₁/∂x + ∂F₂/∂y + ∂F₃/∂z, where ∂/∂x, ∂/∂y, and ∂/∂z are the partial derivatives with respect to the respective variables.
3. What does a positive divergence value indicate?
Ans. A positive divergence value indicates that the vector field is spreading outwards from the point of interest. In other words, the flow is diverging away from the point.
4. What is the curl of a vector field?
Ans. The curl of a vector field measures the tendency of the vector field's flow to circulate or rotate around a point. It is a vector quantity and is calculated using the cross product of the vector field with the del operator (∇).
5. How is the curl of a vector field calculated?
Ans. The curl of a vector field F = (F₁, F₂, F₃) is calculated using the formula ∇ × F = (∂F₃/∂y - ∂F₂/∂z, ∂F₁/∂z - ∂F₃/∂x, ∂F₂/∂x - ∂F₁/∂y), where ∂/∂x, ∂/∂y, and ∂/∂z are the partial derivatives with respect to the respective variables.

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