The quantity of heat which crosses unit area | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) According to Fourier's law of heat conduction,the rate of heat flow $\frac{dQ}{dt}$ through a material is given by the formula: $\frac{dQ}{dt} = -

Vedclass · Accepted Answer

The temperature gradient perpendicular to the area

Vedclass · Answer

(B) According to Fourier's law of heat conduction,the rate of heat flow $\frac{dQ}{dt}$ through a material is given by the formula: $\frac{dQ}{dt} = -KA \frac{d	heta}{dx}$.Here,$K$ is the thermal conductivity,$A$ is the area,and $\frac{d	heta}{dx}$ is the temperature gradient.For a unit area $(A = 1)$,the quantity of heat crossing the area per unit time is proportional to the temperature gradient $\frac{d	heta}{dx}$ perpendicular to the surface.Therefore,the correct option is $B$.

The quantity of heat which crosses unit area of a metal plate during conduction depends upon

Similar Questions

Heat flows through a long metallic rod from one end to the other under steady-state conditions. The variation of temperature $\theta$ with distance $x$ from the hot end is shown in which of the following graphs?

When two ends of a rod wrapped with cotton are maintained at different temperatures and after some time every point of the rod attains a constant temperature,then

Define heat transfer in solids.

What is heat transfer? Write its modes. In which mode,medium is not required?

Four rods of silver,copper,brass,and wood are of the same shape. They are heated together after wrapping a paper on each. The paper will burn first on:

Vedclass Test Series

Exam Paper Generator

Online Exam Module