Question

Q.1. Two wires each of length 40 m and diameter 2.6 mm, are connected in series. A potential difference of 50 V is applied between the ends of the composite wire. The resistances the wires are 0.13 Ω and 0.75 Ω, respectively. Determine:

i) the current density in each wire;
ii) the potential difference across each wire;
iii) the magnitude of the electric field in each wire;
iv) the resistivities of the two wires;
v) identify the wire materials.