A conductor of length 1m radius r 1 cm resistivity p 2 5 10

Last updated: 6/7/2023

A conductor of length 1m radius r 1 cm resistivity p 2 5 10 8 Q2 m independent of temperature is connected to a cell of constant emf 5 V as shown in the figure Initially the conductor is at room temperature To 300 K At t 0 the switch Sw is closed The conductor starts radiating heat to the environment according to Newton s law of cooling and the constant of cooling is K 10 sec Heat capacity of the conductor is J K Answer the following questions Resistance of connecting wire is negligible 1 What is the steady state temperature of the conductor A 300 K C 9700 K 2 B 10 000 K D 10 300 K Sw Find the rate of heat radiation through the conductor when it has become constant A x 105 J sec B 105 J sec C 10m x 104 300 J sec B can t be calculated