The security team on a college campus has a capacitor pack that can be used to start a car with a bad battery. It takes about 5000 J to start a car. When the capacitor pack is fully charged, it has an initial voltage of 14.5 V. The capacitor pack can be used to start more than one car without recharging, but when the voltage of the pack has dropped to 12 V, the pack to be recharged. The net capacitance of the pack is 500 F. How many cars can be started with the capacitor pack without recharging the capacitor pack?

The security team on a college campus has a capacitor pack that can be used to start a car with a bad battery. It takes about 5000 J to start a car. When the capacitor pack is fully charged, it has an initial voltage of 14.5 V. The capacitor pack can be used to start more than one car without recharging, but when the voltage of the pack has dropped to 12 V, the pack to be recharged. The net capacitance of the pack is 500 F. How many cars can be started with the capacitor pack without recharging the capacitor pack?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter20: Electric Potential And Capacitance

Section: Chapter Questions

Problem 12OQ: A parallel-plate capacitor is connected to a battery. What happens to the stored energy if the plate...

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What If? The two capacitors of Problem 13 (C1 = 5.00 F and C2 = 12.0 F) are now connected in series and to a 9.00-Y battery. Find (a) the equivalent capacitance of the combination. (b) the potential difference across each capacitor, and (c) the charge on each capacitor.
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