A one metre long wire having area of cross-section `1 mm^2` is stretched by a mass of 3 kg. Calculate the increase in length. Take ` Y = 2 xx 10^11 N m^-2`

A uniform copper wire of mass 2.23xx10^(-3) kg carries a current of 1 A when 1.7 V is applied across it. Calculate its length and area of cross-section. If the wire is uniformly stretched to double its length, calculate the new resistance. Density of copper is 8.92xx10^(3) kg m^(-3) and resistivity is 1.7xx10^(-8) Omega m.

Calculate the % increase in the length of a wire of diameter 2.5 mm stretched by a force of 100 kg f. Y for the wire = 12.5 xx 10^11 dyne cm^-2

Two spheres of 1kg mass each are separated by 3 m. Calculate the gravitational force between then. Given G = 6.67 xx 10^ -11Nm^2//kg^2 .

A wire with an area of cross-section as 1 mm2 has a resistance of 10Q, when a potential difference across its ends is 8V. Calculate the drift velocity of electrons. Given,number density of electrons in wire as 8 xx 10^20 electrons per cubic meter.

The number density of electron in copper is 8.5 xx10^(28)m^(-3) . Find the current flowing through a copper wire of length 20 cm, area of cross section 1 mm square,when connected to a battery of 3 V. Given the electron mobility = 4.5xx10^(-6)m^(2)V^(-1) s^(-1) and electron charge = 1.6 xx 10^(-19)C.

A current of 1 A flows through a wire of length 0.24m and area of cross-section 1.2mm^2 , when it is conneted to a battery of 3V. Find the number density of free electrons in the wire, if the electron mobility is 4.8 xx 10^-6 m^2 V^-1s^-1 , given that charge on electron = 1.6 xx 10^-19C

A wire with an area of cross-section as 10 mm^2 has a resistance of 5Omega , when a potential difference across its ends is 25V. Calculate the drift velocity of electrons. Given the number density of electrons as 5 xx 10^20 electrons per cubic meter ( e//m^-3 )

What is the drift velocity of electrons in a silver wire of length 1 m, area of cross-section 3.14 xx 10^-6m^2 and carrying a current of 10 A. Given, charge on electron = 1.6 xx 10^-19C , Avogadro number = 6.02 xx 10^23 atomic weight of silver = 108 and density of silver = 10.5 xx 10^3 kg m^-3 .

Calculate the electric field in a copper wire of cross-sectional area 2.0 mm^2 carrying a current of 1 A. The conductivity of copper = 6.25 xx 10^7 S m^-1

A wire of length15m (meter) and uniform area of cross section 6.0 xx 10^-7 m^2 has resistance of 5.0 Omega (ohm). What is the resistivity of the material of the wire ?