Answer :
The heat flow has an analogy in the flow of electricity.
what is ohm's law?
The strength of a direct current is inversely related to the resistance of the circuit and directly proportional to the potential difference.
According to Ohm's law, the electrical resistance (R) divided by the voltage potential (E1-E2) equals the current (I) flowing through a wire Re.
I = E₁-E/Re
Since the potential difference and electrical current are analogous to the temperature difference and heat flux in conduction, respectively, the rate of heat conduction through the wall can be expressed as
Q = T₁-T₂/ L/кA = T₁₋T/ R
Where the conductive thermal resistance to heat flow provided by the wall is represented by R = L/кA.
Similar to Ohm's law for electrical circuits, Fourier's law of heat conduction governs heat transfer.
Within the analogy:
- The electrical current (I) and heat flow (Q) are related
- the ratio of electrical resistance to thermal resistance
- voltage to temperature (T) in electrical terms (V)
- the relationship between thermal and electrical conductivity
- Heat transfer to capacitance
Therefore, the heat flow has an analogy in the flow of electricity.
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