The magnetic field at a distance r from a long wire carryimg current I is 0.4 T. The magnetic field at a distance 2r is

The magnetic field at a distance r from a long wire carrying current is 0.6 tesla. The magnetic field at a distance 2r is

Choose the correct option:- The magnetic field at a distance 'r' from long wire carrying a current is 0.8T. The magnetic field a distance 2r is

The magnetic field at a distance 'a' from along wire carrying current 'I' is 0.4 tau . The magnetic field at a distance '2a' is __________ .

The magnetic field at a distance 10 cm from a long straight current carrying conductor is 0.8T. The magnetic field at a distance 40 cm is

The magnetic field at the centre of a loop of radius carrying current I is B_1 .The magnctic field at a distance from the long straight current canying wire is B_2 . Compare B_1 & B_2 .

The strength of the magnetic field at a point distance 10 cm from a long straight current carrying wire is B . The field at a distance 5 cm will be :

The strength of the magnetic field at a point r near a long straight current carrying wire is B . The field at a distance r/2 will be

The strength of the magnetic field at a point r near a long straight current carrying wire is B . The field at a distance r/2 will be