railway RRB Technician Grade 1 Mock Test 2024 Physics Current, Resistance and Electricity Temperature Dependence of Resistivity
The resistances of the platinum wire of a platinum resistance thermometer at the ice point and steam point are 8 Ω and 10 Ω respectively. After inserting in a hot bath of temperature 400°C, the resistance of platinum wire is :
1
2Ω
2
16 Ω
3
8 Ω
4
10 Ω