Question

A current of $\frac{1}{4\pi }$ amp is flowing in a long straight conductor. The line, integral of magnetic induction around a closed path enclosing the current carrying condiictor is

• A. $4\pi \times 10^{-7}Wb/m$
• B. $10^{-7}Wb/m$
• C. $16{\pi }^2\times 10^{-7}Wb/m$
• D. zero

Answer 1

Answer: (B)

$W={\mu }_0{i}^0$