Question #accf8

1 Answer
SCooke
Mar 30, 2016

The first and last conditions.

Explanation:

“Potential” is a balance of charges. The first condition is shifting the equilibrium from both sides! The second one is charge-neutral, the third one is balancing the charge although with different elements, and the last one will also upset the equilibrium, but not as drastically as the first condition.

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