An infinitely long uniform solid wire of radius a carries uniform dc current of density overrightarrow J . The magnetic field at a distance r from the center of the wire is proportional to

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This question belongs to Electronics And Communications Engineering Electromagnetic Field Theory

Electromagnetic Field Theory

?

An infinitely long uniform solid wire of radius a carries uniform dc current of density $$\overrightarrow {\text{J}} .$$
The magnetic field at a distance r from the center of the wire is proportional to

A) r for r < a and $$\frac{1}{{{{\text{r}}^2}}}$$ for r > a B) 0 for r < a and $$\frac{1}{{\text{r}}}$$ for r > a C) r for r < a and $$\frac{1}{{\text{r}}}$$ for r > a D) 0 for r < a and $$\frac{1}{{{{\text{r}}^2}}}$$ for r > a

Answer & Solution

Correct Answer: Option C

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An infinitely long uniform solid wire of radius a carries uniform...

An infinitely long uniform solid wire of radius a carries uniform dc current of density $$\overrightarrow {\text{J}} .$$ The magnetic field at a distance r from the center of the wire is proportional to

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Related Questions on Electromagnetic Field Theory

An infinitely long uniform solid wire of radius a carries uniform dc current of density $$\overrightarrow {\text{J}} .$$
The magnetic field at a distance r from the center of the wire is proportional to