There is a battery, when moving 1C charge, the work of non electrostatic force is 2J, what is the electromotive force of the battery? It supplies power to a small light bulb?

W = Qu, so u = w / Q = 2 / 1 = 2V

When the electrostatic force moves the charge to do work, the electric potential energy decreases, while when the non electrostatic force moves the charge to do work, the electric potential energy increases

When the charge moves, the distance becomes smaller, and the electric potential energy decreases. Non electrostatic force is external force, such as mechanical force, when the charge moves, the distance increases, and the electric potential energy increases

When a charge moves on the same equipotential surface, the electrostatic force does not do work
When a charge moves on the same equipotential surface, the electrostatic force does no work
A judgment question:
When the charge moves on the equipotential surface, it is not affected by the electric field force, so the electric field force does not do work
The equipotential surface is perpendicular to the line of electric field
I still don't understand,
What I want to ask is not the answer analysis
Why is the first one right and the second wrong?
What's the difference between them?

It's right not to do work, but it's wrong not to be affected by the electric field force. For example, a positive charge, and then a negative charge moves around it in a circle. The centripetal force is only provided by the electric field force. You say it is not affected by the electric field force

It is known that a 1000 Watt lamp consumes 1 kilowatt hour of electricity per hour. A lighting court is equipped with 16 600 Watt lamps. If a basketball match lasts two and a half hours, how many kilowatt hours do these lamps need?

Two and a half hours = 2.5 hours
16 * 600 * 2.5 = 24000 kwh = 24 kWh

There is a battery, when moving 1C charge, the work of non electrostatic force is 2J, what is the electromotive force of the battery? It supplies power to a small light bulb?