Magnetic field due to currentHard
Question
A and B are two concentric circular conductors of centre O and carrying current i1 and i2 as shown in the diagram. If ratio of their radii is 1 : 2 and ratio of the flux densities at O due to A and B is 1 : 3 then the value of 
will be : -
will be : -Options
A.
B.
C.
D.
More Magnetic field due to current Questions
A charged particle moves through a magnetic field perpendicular to its direction. Then -...When direct current passed through a spring then it :-...A current carrying coil behave like tiny magnet. If area of coil is A and magnetic moment is ′M′ then curren...In a vibration magnetometer, the time period of a bar magnet oscillating in horizontal component of earth′s magnet...An electron revolves with frequency 6.6 × 1015 r.p.s. around nucleus in circular orbit of radius 0.53 of hydrogen a...