Question: An electrical resistor is connected to a battery, as shown schematically. After a brief transient, the resistor assumes a nearly uniform, steady-state temperature of 95C,

An electrical resistor is connected to a battery, as shown schematically. After a brief transient, the resistor assumes a nearly uniform, steady-state temperature of 95Â°C, while the battery and lead wires remain at the ambient temperature of 25Â°C. Neglect the electrical resistance of the lead wires.

(a) Consider the resistor as a system about which a control surface is placed and Equation 1.11 c is applied. Determine the corresponding values of Ein (W), Eg (W), Eout (W), and Est (W). If a control surface is placed about the entire system, what are the values of Ein, Eg, Eout, and Est?

(b) If electrical energy is dissipated uniformly within the resistor, which is a cylinder of diameter D = 60 mm and length L = 250 mm, what is the volumetric heat generation rate, q (W/m3)?

I = 6A Resistor Battery- Air V = 24 V T= 25°C Lead wire

I = 6A Resistor Battery- Air V = 24 V T= 25C Lead wire

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