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The Maxwell equation ∇×E=\(\frac{-\partial B}{\partial t}\) is derived from which law?(a) Amperes law(b) Faradays Law(c) Lens law(d) Gauss lawI had been asked this question during an interview for a job.The doubt is from Radiation topic in portion Radiation, Baluns & Polarization of Antennas

Answer»

Correct choice is (b) Faradays LAW

The explanation: Faradays law states that emf GENERATED around a LOOP of wire in magnetic field is proportional to the rate of change of time-varying magnetic field through the loop.

Amperes law gives ∇×H=J

Lens law gives only the reason for the negative SIGN in the Faradays law of induction.

Gauss’s law states that the net flux of an electricfield in a CLOSED surface is directly proportional to the enclosed electric charge.



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