A copper wire of length 50cm and area of cross-section `10^(-6)m^(2)` caries a current of `1A` .If the resistivity of copper is `1.8times10^(-8)Omegam` .The electrical field across the wire is

A copper wire of length 2m and area of cross-section 1.7 xx 10^(-6)m^(2) has a resistance of 2 xx 10^(-2) ohms. Calculate the resistivity of copper.

The electric field in the copper wire of area of cross - section 2mm^(2) carrying a current of 1A is (use resistivily of copper is 1.7 xx 10^(-8) Omegam)

Calculate the electric field in a copper wire of cross-sectional area 2.0mm^(2) carrying a current of 1A .The resistivity of copper =1.7xx10^(-8)(Omega)m .

Calculate the electric field in a copper wire of cross-sectional area 2.0 mm^(2) carrying a current of 1 A. The resistivity of copper =1.7xx10^(-8) Omega m.

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.

A metallic wire carries a current of 100 A , its area of cross section is 1 cm^(2) . If the resistivity of the copper is 1.7xx10^(-8) Omega m , then the electric field strength in the copper will be

Calculate the electric field in a copper wire of cross-sectional area 2.0 mm square carrying a current of 2 A. The resistivity of copper is 1.7 xx 10^(-8)Omega m .

There is a copper wire of length 2.2 m, of area of cross-section 2.0sq.mm, carrying a current of 6.0A. If the number density of electrons in copper is 8.5 xx10^(28) m^(-3) , find the time taken by an electron to drift from one end to another end of the wire.