A uniform current `I` is flowing in a long wire of radius `R`. If the current is uniformly distributed across the cross-sectional area of the wire, then

A cylindrical long wire of radius R carries a current I uniformly distributed over the cross sectional area of the wire. The magnetic field at a distance x from the surface inside the wire is

A long cylindrical wire carries a steady current which is uniformly distributed across its cross section. Which of the following is true?

A cylindrical long wire of radius R carries a current I uniformly distributed over the cross sectionasl area of the wire. The magnetic field at a distasnce x from the surface inside the wire is

A long thick conducting cylinder of radius 'R' carries a current uniformly distributed over its cross section :

A long thick conducting cylinder of radius 'R' carries a current uniformly distributed over its cross section :

A long straight wire of radius a carries a steady current I. the current is uniformly distributed across it cross-section. The ratio of the magnetic field at a/2 and 2a is

Figure shows the circular cross-section of a long straight wire of radius a carrying steady current I. The current I is uniformly distributed across this cross-section. Calculate the magnetic field in the region r lt a (dashed inner circle) and r gt a (dashed outer circle).

A long straight wire of radius R carries a steady current which is uniformly distributed through the cross-section of the wire. The magnitudes of the magnetic field at distance r_(1) and r_(2) from the centre of the wire are B_(1) and B_(2) respectively. Then