A car owner forgets to turn off the headlights of hiscar while it is parked in h

Question

A car owner forgets to turn off the headlights of hiscar while it is parked in his garage. If the 12.57 V batteryin his car is rated at 100 A*h and each headlight requires 27 W ofpower, how long will it take the battery to completelydischarge? ? hours A car owner forgets to turn off the headlights of hiscar while it is parked in his garage. If the 12.57 V batteryin his car is rated at 100 A*h and each headlight requires 27 W ofpower, how long will it take the battery to completelydischarge? ? hours

Explanation / Answer

P = I * V I = 2P/V since there are two headlights so twice thepower I = 2 * 27 W / 12.57 V = 4.30 A 100 A*h / 4.30 A = 23hrs

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