The temperature (T) dependence of resistivity of materials A andmaterial B is represented by fig (i) and fig (ii) respectively.Identify material A and material B.(i) material A is copper and material B is germanium(ii) material A is germanium and material B is copper(iii) material A is nichrome and material B is germanium(iv) material A is copper and material B is nichrome

The resistivity of a metallic conductor ______________ with decrease in temperature

At 300 K, the resistivity of Be is 4 x 10-8 Ωm with a temperature coefficient ofresistivity of 0.025 K-1.a) Determine the resistivity at 400 K.b) The electrical resistivity of a beryllium alloy containing 5 at% of an alloyingelement is 50 × 10-8 Ωm at 300 K. Determine the contribution to resistivitydue to impurities.

A copper conductor has its specific resistance of 1.6 × 10−6 ohm-cm at 0°C and a resistance temperature coefficient of 1/254.5 per °C at 20°C. Find (i) the specific resistance and (ii) the resistance - temperature coefficient at 60°C.Read more on Sarthaks.com - https://www.sarthaks.com/457433/copper-conductor-specific-resistance-ohm-resistance-temperature-coefficient-254-20c

Define resistance and resistivity and also give the relation between them. Explain the dependence of resistance on temperature.

The resistivity of alloys is:(a) very low (b) generally lower than its constituent metals(c) more than resistivity of insulators (d) very high