The areas of cross-section of three magnets of same length are A,2AA and 6A respectively The ratio of their magnetic moments will be

The intensity of magnetization of a bar magnet is 5.0 xx 10^4 A m^(-1) . The magnetic length and the area of cross section of the magnet are 12 cm and 1 cm^2 respectively. The magnitude of magnetic moment of this bar magnet is (in Si unit)

The intensity of magnetsation of a bar magnet is 5.0xx10^(4)A.m^(-1) The magnetic length and area of cross section of the magnet are 12cm and 1 "cm"^(2) Respectively. The magnitude of magnetic moment of this this bar magnet is (in SI unit)

The intensity of magnetisation of a bar magnet is 5xx10^(4)A-m^(-1) . The magnetic length and the area of cross section of the magnet are 12cm and 1cm^(-2) respectivley. The magnitude of magnetic moment of this bar magnet (in SI unit) is.

The intensity of magnetisation of a bar magnet is 5xx10^(4)A-m^(-1) . The magnetic length and the area of cross section of the magnet are 12cm and 1cm^(-2) respectivley. The magnitude of magnetic moment of this bar magnet (in SI unit) is.

Two wires of same material have lengths, L and 2L and cross-sectional area 4A and A, respectively. The ratio of their resistances would be

State the principle of working of transformer. Explain the construction and working of a transformer. Derive an expression for e.m.f. and current in terms of ratio. Find the magnetization of a bar magnet of length 10 cm and cross-sectional area 4cm^(2) , if the magnetic moment is 2Am^(2) .

Two wires of same material have length L and 2 L and cross– sectional areas 4 A and A respectively. The ratio of their specific resistance would be