Question

A battery, left idle (i.e. not in use):
A. Converts chemical energy into electrical energy
B. Converts electrical energy into chemical energy
C. Converts electrical energy into light energy
D. Does no energy conversions

Answer 1

Here we have to see what happens to a battery when it is not in use. Then we can see whether it does any energy conversions or not.we have to see that the battery undergoes which type of conversions.

Complete step by step answer:
A battery is a device that consists of one or more externally attached electrochemical cells to power devices such as flashlights, mobile phones and electric cars. If a battery provides electricity, the cathode is its positive terminal and the anode is its negative terminal. The negative terminal is the source of electrons that pass to the positive terminal via an external electrical circuit.
A redox reaction transforms high-energy reactants to lower-energy products when a battery is attached to an external electrical load and the free energy is transmitted as electrical energy to the external circuit.
Batteries directly transform chemical energy to electrical energy. In certain situations, the released energy is the difference in the coherent or bond energies of the electrochemical reaction metals, oxides or molecules.
The voltage produced across the terminals of a cell depends on the energy release of its electrodes and the electrolyte’s chemical reactions.
Shelf-discharge is a battery phenomenon in which internal chemical reactions decrease the battery’s stored charge without any relation with the electrodes or an external circuit. Shelf-discharge lowers the shelf life of batteries and when eventually put to use, allows them to initially have less than a complete energy.
So, from the above discussion we can conclude that a battery, left idle (i.e. not in use) does not energy conversions.

So, the correct answer is “Option D”.

Note:
Students must have to keep the concept in their mind that a battery can only perform when it is electrically connected to something and electrons pass between the cathode and the anode.