If a 40 watt bulb is on for 2 hours, how much heat is generated?
Correct answer: B. 288 x 10³ J
- A. 280 x10⁵ J
- B. 288 x 10³ J
- C. 80 J
- D. 400 J
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About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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