A long straight wire of radius `a` carries a steady current `i`. The current is uniformly distributed across its cross section. The ratio of the magnetis field at `(a)//(2) and (2a)` is

A long staright wire of radius a carries a steady current I . The curent is unifromly distributed over its cross-section. The ratio of the magnetic fields B and B' , at radial distances (a)/(2) and 2a respectively from the axis of the wire is:

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

Figure shows a long straight wire of a circular cross-section (radius a) carrying steady current l. The current l is uniformly distributed across this cross-section. Calculate the magnetic field in the region r lt a and r gt 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 Ampere's 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 curcular cross-section of radius 'a' carries a steady current 'l'. The current is uniformly distributed the across- section . Apply Amphere's circuital law to calculate the magnetic field at a point 'r' in the region for (i) r lt a and (ii) r gt a .

A long straight wire of radius 10mm carries a current uniformly distributed over its cross section. The ration of magnetic fields due to the wire at distance of 5mm and 15 mm, respectively from the axis of the wire is

A long straight wire of radius 10mm carries a current uniformly distributed over its cross section. The ration of magnetic fields due to the wire at distance of 5mm and 15 mm, respectively from the axis of the wire is

A long, thick straight conductor of radius R carries current I uniformly distributed in its cross section area.The ratio of energy density of the magnetic field at distance R//2 from surface inside the conductor and outside the conductor is:

A long, straight wire of radius R carries a current distributed uniformly over its cross section. The magnitude of the magnetic field is

A long straight conducting solid cylindrical wire of radius R carries a steady current / that is uniformly distributed throughout the cross section of the wire. Draw graph of magnetic field B versus r (where r is distance from the axis of the wire)