The area of ​​cross section of a wire is 1.0xx10^(-7) meter^(2) and the number of free electrons in the wire...

A 20 N stone is suspended from a wire and its length changes by 1% . If the Young's modulus of the material of wire is 2xx10^(11)N//m^(2) , then the area of cross-section of the wire is 2xx10^(11)N//m^(2) , then the area of cross-section of the wire will be

There is a current of 1.344 amp in a copper wire whose area of cross-section normal to the length of the wire is 1 mm^(2) . If the number of free electrons per cm^(2) is 8.4 xx 10^(22) then the drift velocity would be

Threre is a current of 1.344 a in a copper wire whose area of cross-sectional normal to the length of wire is 1mm^(2) . If the number of free electrons per cm^(2) is 8.4xx10^(28)m^(3) , then the drift velocity would be

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.

Electron density in a conductor of area of cross section 0.006 cm^2 is 8.0 xx10^(22) cm ^(-3) . Calculate the drift velocity of electron in the wire if a current of 2 flows through it.

A current of 16 A is made to pass through a conductor in which the number of density of free electrons is 4xx10^(28)m^(-3) and its area of cross section is 10^(-5)m^(2) . The average drift cross section is 10^(-5)m^(2) . The average drift velocity of free electrons in the conductor is

Two similar wires under the same load yield elongation of 0.1 mm and 0.05 mm respectively. If the area of cross-section of the first wire is 4 mm^(2) , then the area of cross-section of the second wire is

The length of a wire is 1.0 m and the area of cross-section is 1.0 xx 10^(-2) cm^(2) . If the work done for increase in length by 0.2 cm is 0.4 joule, then Young's modulus of the material of the wire is

There is a current of 40 A in a wire 10^(-6)m^(2) area of cross-section. If the number of free electrons per cubic metre is 10^(29) , then the drift velocity is :

A current of 10 A exists in a wire of crossectional area of 5 m m^(2) with a drift velocity of 2 xx 10^(-3) ms^(-1) . The number of free electrons in each cubic meter of the wire is "___________"