184 UDJELU Example 3.16 A current of 1 ampere is flowing through a copper wire of length 0.1 m and cross-section 1 x 10°m (i) If the specific resistance of copper be 1.7 x 10-612-m, calcul the potential difference across the ends of the wire. (ii) Determine current density in the wire. (Given, density of copper = 8.9x 10 kg m , atomi = 63.5, N = 6.02x 1026 per kg-atom. 141=0.1 m, A=1x10m", 8.9x 10 kg m-, atomic weight

Find the resistance of a copper wire of length 1m and area of cross-section 2mm ^(2) .The specific resistance of copper= 1.7xx10^(-8)Ohm-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 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 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.

A current of 0.01 A flows through a potentiometer wire of cross section area 10^(-6)m^(2) . If the specific resistance of the potentiometer wire is 10^(-7) ohm-m, then the potential gradient will 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.

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 cross-sectional area 3.4 mm and length of the wire 400m, specific resistivity of copper is 1.7xx10^(-8)Omega-m Then the resistance of the wire is