A wire carrying a current of 12A is in the form of a circle. It is necessary to have a magnetic field of induction `10^(-6)` T at the centre. What should be the radius?

Explanation

To find the radius of a circular wire carrying a current of 12 A that produces a magnetic field of induction \(10^{-6}\) T at its center, we can use the formula for the magnetic field at the center of a circular loop:

\[ B = \frac{\mu_0 I}{2R} \]

Where:
- \(B\) is the magnetic field induction (in Tesla),
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