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Q: What is negative potential?

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Lithium has the highest negative potential of -3.045 volts

Negative work increases potential energy.

the negative value for a standard potential indicates that the reaction is not spontaneous.

Yes. An object's potential energy is relative to an arbitrary constant. Depending on the choice of that constant, the potential energy can indeed be negative.

the electron get a repulsive force from the negative potential and a attractive force from the positive potential

Potential hyperpolarization are more negative to the resting membrane potential because of voltage. This is taught in biology.

If the resting potential becomes more negative the cell becomes hyperpolarized.

anode positive potential cathode negative potential

Potential unemployment

First of all, 'voltage' means potential difference -and you cannot have a potential difference 'at a point'. Similarly, you cannot have a 'negative' potential difference, so it doesn't make sense to talk about a 'negative voltage'.Your question, therefore, should read: 'How do you find the potential at a point in a circuit with respect to a negative potential?'The answer is that you simply connect a voltmeter between the two points. The reading will give you the value of the potential. If it reads upscale, then it'll be positive; if it reads downscale, then it will be negative (i.e. even more negative tan the reference potential).

it isnt, it is less negative!

If the reduction potential of the cathode is greater than that of the anode, there will be a negative total reduction potential (reaction will not proceed spontaneously).

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