An Electric Stove Burner of Diameter 20 Cm Is at a Temperature

question 8

Multiple Choice

An electric stove burner of diameter 20 cm is at a temperature of 250 °C.If σ = 5.67 x 10^-8 W/m²·K⁴, at what rate is the burner radiating energy? Assume the emissivity ε = 0.6.

• A)4 W
• B)80 W
• C)320 W
• D)1600 W
• E)8000 W

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