A dry cell motorcycle battery rated at 12 Volts for 17 Amphours a. What is the e

Question

A dry cell motorcycle battery rated at 12 Volts for 17 Amphours a. What is the energy stored in Joules in the battery? b. A headlight is a 55 watt bulb. How long will the batterylast if the light is on without running? c. If a 0.2 amp trickle charger is used, how long will it taketo fully charge a dead battery? A dry cell motorcycle battery rated at 12 Volts for 17 Amphours a. What is the energy stored in Joules in the battery? b. A headlight is a 55 watt bulb. How long will the batterylast if the light is on without running? c. If a 0.2 amp trickle charger is used, how long will it taketo fully charge a dead battery?

Explanation / Answer

a) . What is the energy stored in Joules in the battery? E= VIt E=12x17x1= Et= 204 watt-hours Et= 734,400 J b) A headlight is a 55 watt bulb. How long will the battery last ifthe light is on without running? P= 55W Energy required per hour is E1= P t = 55 x 3600=198,000 t = Et/E1 = 734,400/198,000= t= 3.7 hours c) If a 0.2 amp trickle charger is used, how long will it take tofully charge a dead battery? Pin= VI= 12 x 0.2= 2.4 W t= E/P= 734400/ 2.4 = 306,000s t= 85 h Please let me know if you have further questions.

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