What is the expression for heat current? Q is heat, t is time, T is te – McqOptions

MCQOPTIONS

1.	What is the expression for heat current? Q is heat, t is time, T is temperature.
A.	Q/ t
B.	Q/ T
C.	T/ t
D.	Q/ T t
Answer» B. Q/ T

Discussion

No Comment Found

Related MCQs

Two spheres, A & B, are made up of the same material. The radius of A is twice that of B, while the temperature of A is half that of B. What is their ratio of energy emitted per unit time (E<sub>A</sub> : E<sub>B</sub>)?
If we hold a metal rod from one end and dip the other in a source of fire, what will happen to the temperature of the rod at steady state?
The sun emits light having maximum intensity at a wavelength 468nm. Assume emissivity of sun is 1. Calculate its surface temperature. = 5.67*10<sup>-8</sup>W/m<sup>2</sup>K<sup>4</sup>.
What is the net amount of energy per unit time being received by a body having a temperature of 40 C in a surrounding of 60 C? (The surface area of body = 2m<sup>2</sup>, = 5.67*10<sup>-8</sup>W/ m<sup>2</sup>K<sup>4</sup> & emissivity of 0.4).
The electromagnetic energy emitted by a perfect radiator corresponding to a temperature T and surface area A is?
What is the value of Wien s constant?
At a given temperature a body emits energy of a single wavelength corresponding to that temperature. True or False?
What is the expression for heat current? Q is heat, t is time, T is temperature.
A steel and a copper bar are joined end to end. The area of the steel bar is half the area of the copper bar. Their lengths are equal to 10cm each. Temperature of free ends of steel & copper rod are 0 C & 100 C respectively. K<sub>S</sub> = 50 J/smK & K<sub>C</sub> =384 J/smK. Calculate equivalent thermal conductivity of the combined bar.
Quantitatively heat conduction can be described as?