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s01_concept

# s01_concept - For that reason many in the class picked#2 as...

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Battery Model Concept Test True or False: A good model for a 1.5 V D cell battery is a 1.5 V voltage source. 1. True the voltage of a 1.5 V battery is very close to 1.5 V. 2. False the load on the battery will always reduce the voltage somewhat, whereas the voltage of a voltage source is constant no matter the load. 3. Could be true or false, depending on the circumstances. 4. Don’t know.

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Battery Model Solution 0 5 10 15 20 25 30 35 40 1 2 3 4 Number of Students Answer Lecture S1: Battery Model It is true that any load on a real battery will change the battery voltage somewhat.
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Unformatted text preview: For that reason, many in the class picked #2 as the solution. However, #2 is not the correct solution, because in some circumstances, the variation in voltage is small enough that it may be ignored. In those circumstances, a voltage source is a good model for a battery. So the correct answer is #3 the choice of the best model depends on the circumstances....
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