State two quantities that are used to determine whether accumulator require recharging or not​

scientific laws are the result of testing theories and proving them to be facts.

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this

electric field is a function of 1/r^2

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