71.A long straight wires carries a current I let B1 be the magnetic field at the point p at a distance d from the wire consider a section of length l of
![Magnetic field inside and outside a long straight current carrying wire Amperian loops A long straight wire of a circular cross-section (radius a) carrying steady current I. The current I is uniformly Magnetic field inside and outside a long straight current carrying wire Amperian loops A long straight wire of a circular cross-section (radius a) carrying steady current I. The current I is uniformly](https://toppr-doubts-media.s3.amazonaws.com/images/3917372/f8c71b77-a90e-47df-bfd5-45e86f468e0a.jpg)
Magnetic field inside and outside a long straight current carrying wire Amperian loops A long straight wire of a circular cross-section (radius a) carrying steady current I. The current I is uniformly
![A magnetic field due to a long straight wire carrying a current $I$ is proportional toA. $I$B. ${I^2}$C. ${I^3}$D. $\\sqrt I $ A magnetic field due to a long straight wire carrying a current $I$ is proportional toA. $I$B. ${I^2}$C. ${I^3}$D. $\\sqrt I $](https://www.vedantu.com/question-sets/ec5970da-2d30-4697-802a-1c4d17f7e36e6556900218247010151.png)