In the given current the resistance between THERMAL A AND B is equal to

400 J of heat is produced each second in a  resistance. Find the current passing through it.

Two wires having resistance of 6 Ω and 3 Ω are connected to same voltage. Ratio of heat dissipated at resistance is

Ratio of thermal energy released in two resistor R and 3R connected in parallel in an electric circuit is :

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

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