Astudent did 24 j work on a chair. she applied a force of 12 n and moved the chair 2 m. what else do you need to know to determine the amount of power used?

To determine the power, we need to know the time which he did the energy in it

Using the definition of the power which is the change time rate of the energy

in unit (J/sec) which equals to (watt)

whichever one it is, it's definitely not one that you included on the list you provided.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.