Teaching UP TGT Mock Test Series 2025 Physics Current, Resistance and Electricity Temperature Dependence of Resistivity
V-I graph for a platinum wire at temperatures T1 and T2 is shown in the given figure. The temperature difference (T2 - T1) is proportional to:
1
sin 2θ
2
cos 2θ
3
tan 2θ
4
cot 2θ