The number density of conduction electrons in a copper conductor is `8.5xx10^(28) m^(-3)`. How long does an electron take to drift from one end of a wire 3.0 m long to its other end ? The area of cross-section of the wire is `2.0xx10^(-6) m^(2)` and it is carrying a current of 3.0 A.

The number density of free electrons in a copper conductor is estimated at 8.5 xx 10^(28) m^(-3) . How long does an electron take to drift from one end of a wire 3.0 m long to its other end? The area of cross-section of the wire is 2.0 xx 10^(-6)m^(2) and it is carrying a current of 3.0A.

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.

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 is 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 .

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) .

Estimate the average drift speed of conduction electrons in a copper wire of cross-sectional area 2.0 xx 10^(-7)m^(2) carrying a current of 3.0 A. Assume that each copper atom contributes roughly one conduction electron. The density of copper is 9.0 xx10^(3) kg//m^(3) , and its atomic mass is 63.5 u.

(a) Estimate the average drift speed of conductin 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 kgm^(-3) and its atomic mass is 63.5 u. (b) Compare the drift speed obtained with the speed of propagation of electric field along the conductor, which causes the drift motion.

A bob of mass 10 kg is attached to wire 0.3 m long. Its breaking stress is 4.8 xx 10^(7) N//m^(2) . The area of cross section of the wire is 10^(-6) m^(2) . The maximum angular velocity with which it can be rotated in a horizontal circle