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Is 2D version of Biot-Savart equation is used, when the sources are invariant in one direction?

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Is 2D version of Biot-Savart equation is used, when the sources are invariant in one direction?

(a) True

(b) False

I had been asked this question in an internship interview.

This intriguing question originated from The Vortex Filament, Biot-Savart Law, Helmholtz Theorem in portion Flow over Airfoils over Finite Wing of Aerodynamics

1 Answer

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by (720k points)
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Best answer
Right answer is (a) True

Easiest explanation: The 2D version of the biot-savart equation is used when the sources are invariant in one direction.in general the current need not flow only in a plane normal to the invariant direction and it is given by the formulations given above work well when the current can be approximated as running through an infinitely-narrow wire.

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