A straight section `PQ` of a circuit lise along the `X`-axis from `x=-a/2` to `x=a/2` and carriers a steady current `i`. The magnetic field due to the section `PQ` at a point `X=+a` will be

A straight section PQ of a circuit lies along the x-axis from x=-(a)/(2) to x=(a)/(2) and carries a steady current i. The magnetic field due to the section PQ at a point x =+a will be

Magnetic field at point O due to straight conductor PQ is

Magnetic field at point O due to straight conductor PQ is

A long straight wire of circular cross-sectional of radius a carries a steady current I. The current is uniformly distributed across the cross-section. Apply Ampere's circuital law to calculate the magnetic field at a point r in the region r < a

A long straight wire of circular cross-sectional of radius a carries a steady current I. The current is uniformly distributed across the cross-section. Apply Ampere's circuital law to calculate the magnetic field at a point r in the region r > a

A long straight wire of a circular cross-section of radius a carries a steady current I. The current is uniformly distributed across the cross-section. Apply Amperes circuital law to calculate the magnetic field at a point at distance r in the region for (i) rlta and (ii) rgta .

A long straight wire of a circular cross-section of radius 'a' carries a steady current I. The current is uniformly distributed across the cross-section. Apply Ampere's circuital law to calculate the magnetic field at a point at distance 'r' in the region for (i) rlta and (ii) rgta .