A Primitive Space Heater Consists of a 10 $^{\circ}$ C,what Power Would Be Radiated into the Room? Assume the Iron

question 6

Multiple Choice

A primitive space heater consists of a 10.0 cm radius iron ball through which electrical current was passed in order to heat the ball and subsequently the surrounding air.If the temperature of the iron ball was kept at 530 K and the room temperature was 20 $^{\circ}$ C,what power would be radiated into the room? Assume the ball is a perfect blackbody.

• A) 140 W
• B) 110 W
• C) 430 W
• D) 480 W

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