Assuming that there is one free electron per atom in copper, determine the number of free electrons in `1 "metre"^(3)` volume of copper. Density of copper is `8.9xx10^(3) kgm^(-3)` and atomic weight 63.5. (Avogadro's number, `N=6.02xx10^(26)` per kg-atom).

A current of 1.0 ampere is flowing through a copper wire of length 0.1 metre and cross-section 1.0xx10^(-6) m^(2) . (i) If the specific resistance of copper be 1.7xx10^(-8) Omega m , calculate the potential difference across the ends of the wire. (ii) Determine current density in the wire. (iii) If there be one free electron per atom in copper, then determine the drift velocity of electrons. Given : density of copper =8.9xx10^(3) kg m^(-3) , atomic weight =63.5, N=6.02xx10^(26) per kg-atom.

If the density of copper is 8.9xx10^(3)kg//m^(3) , find its relative density.

We know that copper is a conductor of electricity due to presence of free electrons in it. Assume that on an average each copper atom provides one free electron. Find the number of free electrons per unit valume of copper. The density of copper is approximately 9,000 kg / m^3 and its atomic mass is 63.5 u.

Potential difference of 100 V is applied to the ends of a copper wire one metre long. Calculate the average drift velocity of the electrons ? Compare it with thermal velocity at 27^@C . Consider there is one conduction electron per atom. The density of copper is 9.0xx10^(3)kg//m^(3) , Atomic mass of copper is 63.5 g. Avogadro's number = 6.0 xx 10^(23) per gram-mole. Conductivity of copper is 5.81 xx 10^(7)Omega^(-1)m^(-1) . Boltzmann constant = 1.38 xx10^(23)JK^(-1) .

Calculate the drift speed of the electrons when 1A of current exists in a copper wire of cross section 2mm^2 The number of free electrons in 1cm^3 of copper is 8.5xx10^22

Assume that each of copper atom has one free electron. Estimate the number of free electrons in 1 mg of copper. Given that atomic weight of copper =63.5 and Avogadro number =6.02xx10^(23) . What is the charge possessed by these free electrons?

A copper wire fo cross-sectional area 3.00xx10^(-6) m^2 carries a current 10.0A. a. Find the drift speed of the electrons in the wire. Assume that each copper atom contributes one free electron to the body of material. b. Find the average time between collisions for electrons in the copper at 20^@C. The density of copper si 8.95 gcm^(-1) , molar mass of copper is 63.5 gmol^(-1) , Avogadro number is 6.02x10^(23) electrons per mol and resistivity of copper is 1.7 xx10^(-8) Omegam.

Calculate the drift speed of the electrons when 1A of current exists in a copper wire of cross section 2 mm^(2) .The number of free electrons in 1cm^(3) of copper is 8.5xx10^(22) .

Calculate the average drift speed of conduction electrons in a copper wire of cross-sectional area 1.0xx10^(-7)m^(2) , carrying a current of 1.5 A. Assume that each copper atom contributes roughly one conduction electron. The density of copper is 9.0xx10^(3) kg m^(-3) and its atomic mass is 63.5. Take Avogadro's number =6.0xx10^(23) .

Every atom makes one free electron in copper. If 1.1 ampere current is flowing in the wire of copper having 1 mm diameter, then the drift velocity (approx.) will be (Density of copper =9 xx 10^(3) kg m^(-3) and atomic weight = 63)