Potential difference in junction of two cells one 4.5V and one 3V

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SUMMARY

Connecting two cells of different voltages, specifically 4.5V and 3V, in parallel creates a potential difference across their junctions. The higher voltage cell (4.5V) dictates the potential difference, as voltages do not add in parallel configurations. This practice is dangerous and can lead to short circuits or fires. Proper understanding of electrical principles is crucial when dealing with battery configurations.

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  • Basic understanding of electrical circuits
  • Knowledge of voltage and current relationships
  • Familiarity with Ohm's Law (I = V/R)
  • Awareness of battery safety protocols
NEXT STEPS
  • Research safe methods for connecting batteries in parallel
  • Learn about the implications of connecting batteries of different voltages
  • Study electrical circuit theory, focusing on series vs. parallel configurations
  • Explore battery chemistry and safety measures to prevent hazards
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Electrical engineers, hobbyists working with batteries, and anyone interested in safe battery management practices.

alexratman
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1. If two cells, one of 4.5V and one of 3V are connected in parallel what is the potential Difference across the junctions between them.
2. I = \frac{V}{R}
3. As 4.5v is greater it is the potential difference as they don't add up?
 
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alexratman said:
1. If two cells, one of 4.5V and one of 3V are connected in parallel what is the potential Difference across the junctions between them.



2. I = \frac{V}{R}



3. As 4.5v is greater it is the potential difference as they don't add up?

Welcome to the PF.

As stated, the problem doesn't make sense yet. You wouldn't connect two batteries of different voltages in parallel directly -- that's a good way to start a fire.

What are "the junctions between them"? Is there a figure that goes with this question?
 

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