InterviewSolution
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InterviewSolution
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Find the magnetic flux density when a point from a finite current length element of current 0.5A and radius 100nm.(a) 0(b) 0.5(c) 1(d) 2This question was posed to me by my college professor while I was bunking the class.Question is from Biot Savart Law in chapter Magnetostics of Electromagnetic Theory |
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Answer» CORRECT option is (c) 1 The EXPLANATION is: The MAGNETIC flux density is B = μH, where H is given by I/2πr. Put μ = 4π x 10^-7, I = 0.5 and R = 10^-7, we get B = 4π x 10^-7 x 0.5/2π x 10^-7 = 1 unit. |
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