Two wires a and b, each of length 40 m and area of cross-section `10^(-7) m^(2)` , are connected in series and a potenital difference of 60 V is applied between the ends of this combined wire. Their resistances are respectively 40 and `20 Omega`. Determine for each wire (i) specific resistance, (ii) electric-field and (iii) current-dentsity.

Two wires a and b, each of length 40 m and area of cross-section `10^(

1.	Two wires a and b, each of length 40 m and area of cross-section `10^(-7) m^(2)` , are connected in series and a potenital difference of 60 V is applied between the ends of this combined wire. Their resistances are respectively 40 and `20 Omega`. Determine for each wire (i) specific resistance, (ii) electric-field and (iii) current-dentsity.
Answer» Correct Answer - `(i) 1.0xx10^(-7) Omega m, 5.0xx10^(-8) Omega m (ii) 1.0 Vm^(-1), 0.5 Vm^(-1) (iii) 1.0xx10^(7) Am^(-2), 1.0xx10^(7) Am^(-2)`

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