A rechargeable battery that is completely drained of electrical energy can be completely charged by applying 6.0 mA of current for 1.0 h.If the battery acquires an emf of 1.0 V in the process of being charged,how much energy is the battery capable of storing?

Question

Quizplus · Accepted Answer

The energy stored in the battery is equal to the product of the emf and the charge stored in the battery. The charge stored in the battery is equal to the current multiplied by the time for which the current flows. Therefore, the energy stored in the battery is:$$E = emf * q = emf * I * t = (1.0 V) * (6.0 mA) * (1.0 h) = 6.0 mJ$$

A Rechargeable Battery That Is Completely Drained of Electrical Energy