Drive formula of heat in a circuit and writ its unit.
Answers
Heat Formula
Heat is the form of energy which is transferred between two substances at different temperatures. The direction of the flow of energy is from the substance of higher temperature to the substance of lower temperature. Heat is usually measured in units of energy i.e. calories or joules. Heat and temperature should not be used interchangeably, but this is incorrect. The temperature will measure the hotness or coldness of a substance. In this article, we will discuss the heat formula with examples. Let us learn the concept!
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Questions
Two rods of same lengths, radii and material transfer a given amount of heat in 12 second when they are joined as shown in the figure (a). But when they are joined as shown in figure (b), then they will transfer same heat in same conditions in :
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The ends of two rods of different materials with their thermal conductivities, radii of cross sections and lengths all in the ratio 1 : 2 are maintained at the same temperature difference, if the rate of flow of heat in the larger rod is 4 cal/ sec, the rate of flow of heat in the shorter rod will be
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The temperature of the two outer surfaces of a composite slab, consisting of two materials having coefficients of thermal conductivity \mathrm{K}K and 2\mathrm{K}2K and thickness \mathrm{x}x and 4\mathrm{x}4x, respectively are \mathrm{T}_{2}T
2
Explanation:
The Heat formula is:
C =
Q
m
Δ
T
Where,
C specific heat,
m mass of the body,
Δ
temperature difference.