GENERAL KNOWLEDGE

Detailed explanation-1: -A temperature gradient is a physical quantity that describes in which direction and at what rate the temperature changes the most rapidly around a particular location. The temperature gradient is a dimensional quantity expressed in units of degrees (on a particular temperature scale) per unit length.

Detailed explanation-2: -The ratio of the difference in temperature to the distance between two points in a heated body under a steady state is called the temperature gradient.

Detailed explanation-3: -For example, if the ends of an aluminum bar are exposed to two different temperatures, there will exist a temperature gradient in the bar, causing heat to flow from the hotter end to the cooler end.

Detailed explanation-4: -Conductive heat transfer is transfer of heat down a temperature gradient between two bodies in close physical contact. The rate of conductive heat transfer depends on temperature gradient between the two bodies, the area of contact and the conductive properties of these bodies.