Calculate Maximum Water Boiled from 12.0V Car Battery

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SUMMARY

The discussion focuses on calculating the maximum mass of water that can be boiled into steam using a 12.0V car battery, which can deliver approximately 7.56 x 105 C of charge. The key equation involved is V = EPE/q0, where EPE represents the energy potential energy. It is established that, assuming no heat losses, all energy from the battery is utilized for the phase change of water at 100 degrees Celsius.

PREREQUISITES
  • Understanding of electrical energy concepts, specifically voltage and charge.
  • Familiarity with phase change and the energy required for boiling water.
  • Basic knowledge of thermodynamics and heat transfer principles.
  • Ability to perform calculations involving energy, mass, and specific heat capacity.
NEXT STEPS
  • Calculate the energy produced by the 12.0V car battery using the charge delivered.
  • Research the specific heat of water and the latent heat of vaporization.
  • Learn how to apply the formula for energy transfer in phase changes.
  • Explore practical applications of energy calculations in real-world scenarios, such as battery-powered heating systems.
USEFUL FOR

Students in physics or engineering, educators teaching thermodynamics, and anyone interested in practical applications of electrical energy in heating processes.

arod2812
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Homework Statement


A typical 12.0-V car battery can deliver about 7.56 x 105 C of charge before dying. This is not very much. To get a feel for this, calculate the maximum number of kilograms of water (100 degrees C) that could be boiled into steam (100 degrees C) using energy from this battery.


Homework Equations


I am not sure how to solve for kilograms. How do I use what I get from solving equation below to calculate how much water could be boiled into steam??


The Attempt at a Solution


V= EPE/ q0
 
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The water is already at 100C, that means that it is already changing phase. If there is not heat losses then all the energy produced by the battery goes into changing the phase of the water.
 

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