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GATE & ESE - EE, EC

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Electromagnetic Field Theory

Basics of Vector Calculus

Quick practice

Question 1 of 5

The total current in a conductor of radius of R is I and is uniformly distributed. The axis of the conductor is in the z-direction and H is given by\bar{H}=\bar{a}_\phi \frac{1}{2 \pi r} . For R \leq r \leq \infty . What is \nabla \times H  outside the conductors?

A

$\overline{a{}_{r}}.\frac{I}{\pi r}$

B

$\overline{a{}_{\phi }}.\frac{I}{\pi r}$ .

C

zero

D

1

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