Simple Potential Difference Question

AI Thread Summary
The discussion clarifies the differences between a 12V car battery and a 9V radio battery, highlighting that both convert chemical energy into electrical energy but differ significantly in current capacity. A 12V car battery consists of eight cells in series, each providing approximately 1.5V, allowing for higher current output. In contrast, a 9V battery typically contains six smaller cells, which are often "dry" batteries with a moist paste, limiting their current capacity. Car batteries are designed for rapid chemical reactions, making them suitable for high-demand applications. Understanding these differences is crucial for selecting the appropriate battery for specific needs.
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Can someone help me to describe the differences between a 12V car battery and a 9V radio battery. They both convert chemical energy into electrical energy, but the car battery has the capacity for much higher currents with similar voltage to the 9V.

Thanks
 
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The 12V car battery is made with 8 cells in series, each about 1.5 V ...
How many cells do you think a 9V "transistor radio" battery has in it?
Cut one apart lengthwise, if you want to check your expectation.

Car batteries are usually "wet", the chemical reactions can occur quickly (and are more easily reversed); 9V battery cells are "dry" (moist paste)
 

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