A steel wire of length `4.5m` and cross-sectional area `3xx10^-5m^2` stretches by the same amount as a copper wire of length `3.5m` and cross sectional area of `4xx10^-5m^2` under a given load. The ratio of the Young's modulus of steel to that of copper is

A steel wire of length 4.5 m and cross-sectional area 3 xx 10^(-5) m^(2) stretches by the same amount as a copper wire of length 3.5 m and cross-sectional area of 1 xx 10^(-5) m^(2) under a given load. The ratio of the Young's modulus of steel to that of copper is

A steel wire of length 4.7 m and cross-sectional area 3 xx 10^(-6) m^(2) stretches by the same amount as a copper wire of length 3.5 m and cross-sectional area of 4 xx 10^(-6) m^(2) under a given load. The ratio of Young's modulus of steel to that of copper is

A steel wire fo length 5m and cross-sectional area 2xx10^(-6)m^(2) streches by the same amount as a copper wire of length 4m and cross sectional area of 3xx10^(-6) m^(2) under a given load. The ratio of young's mouduls of steel to that of copper is

A steel wire of length 5.0 m and cross-section 3.0xx10^(-5) m^(2) stretches by the same amount as a copper wire of length 3.0 m and cross -section 4.0xx10^(-5)m^(2) under a given load. What is the ratio of Young's modulus of steel to that of copper?

A steel wire of length 4.87 mm and cross-section 3.0 xx 10^(-5) m^(2) stretches by the same amout as a copper wire of length 3.5 m and cross -section 4.0 xx 10^(-5) m^(2) under a given load . White is the ratio of the Young's modulus of steel so that of copper ?

A steel wire of length 4*0m and cross-section 25 mm^(2) strectched by the same anount as a copper wire of length 3*0 m and cross-section 32 mm^(-2) under a given load. Find the ration of the young's modulus of steel to that of copper?

A steel wire 10 m long and 10^-5m^2 in crosssectional area elongates by 0.01 m under a tension of 2500 N. Young's modulus for steel from this data is computed as

A wire of length 10 m and cross-section are 10^(-6) m^(2) is stretched with a force of 20 N. If the elongation is 1 mm, the Young's modulus of material of the wire will be

A steel wire of length 5 m and area of cross-section 4 mm^(2) is stretched by 2 mm by the application of a force. If young's modulus of steel is 2xx10^(11)N//m^(2), then the energy stored in the wire is

A current of 4.8 A is flowing in a copper wire of cross-sectional area 3xx10^(-4) m^(2) . Find the current density in the wire.