For a given power source, the more work the moving positive charge non electrostatic force does, the greater the electromotive force is

For a given power source, the more work the moving positive charge non electrostatic force does, the greater the electromotive force is

The power supply can convert other forms of energy into electrical energy. The conversion process is to transfer the positive charge from the negative pole of the power supply to the positive pole through non electrostatic force (such as chemical action, light action, etc.), so that there is a potential difference between the positive and negative poles of the power supply, which can supply power to the outside, It is also equal to the work done by carrying the unit positive charge from the negative pole to the positive pole of the power supply to overcome the electric field force, or the work done by carrying the unit positive charge from the negative pole to the positive pole of the power supply to overcome the non electrostatic force. Therefore, the more work done by carrying the unit positive charge from the negative pole to the positive pole of the power supply, the greater the electromotive force of the power supply. For a given power supply, the electromotive force is certain
The statement in the original title is wrong

How does the non electrostatic force work inside the power supply? Let's be more specific, for example

For example, when a Zn plate is inserted into a ZnSO4 solution, due to the polarity of water, the Zn ions in Zn tend to separate from the Zn plate and enter the solution. The thinner the solution is, the more active the metal is. At the same time, the hydrated ions in water also tend to