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The magnitude of the conduction current density for a magnetic field intensity of a vector yi + zj + xk will be(a) 1.414(b) 1.732(c) -1.414(d) -1.732I got this question in an interview for job.The doubt is from Maxwell Law in Time Static Fields topic in portion Maxwell Equations of Electromagnetic Theory

Answer»

Correct choice is (B) 1.732

Explanation: From the Ampere circuital law, the curl of H is the conduction current density. The curl of H = yi + ZJ + xk is –i – J – k. Thus conduction current density is –i – j – k. The magnitude will be √(1 + 1 + 1) = √3 = 1.732 units.



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