Why does the potential across the terminals of battery increase on moving from negative terminal to positive terminal?

I really want to know that how does battery create a potential difference across the circuit. When we cross the battery from its negative terminal to positive terminal the potential rises by the voltage mentioned on the battery . So what exactly happens between the terminals so that the potential rises ?I know that the … Read more

Question on static electricity & electron transfer

Static electricity is caused by the transfer of electrons between substances right? For example, take a balloon and your hair. Both are stable and electrically neutral. So why would electrons jump from the balloon to your hair? Answer A heuristic account of why this is can be found in the triboelectric series, which is a … Read more

Does the negative terminal of a battery have greater electron concentration then the positive terminal?

Does the negative terminal of a battery have greater electron concentration then the positive terminal? Else how would charge start flowing once a conducting wire is connected? Answer Starting with a cell with zero net charge the electrochemical reactions within the cell make it energetically favourable to move charges from one end of the cell, … Read more

How does cold make batteries drain faster yet simultaneously they should be refrigerated to keep a charge?

I have always known via common knowledge that batteries drain quicker when it’s cold. I’ve been told it’s best to keep them in an inner pocket close to body heat when outdoors (e.g., batteries for headlamps or cameras when one is hiking in the cold night). And I’ve witnessed this behavior myself as well as … Read more

How batteries create voltage?

I am trying to have a more fundamental understanding of electricity and specifically what voltage is. My memory of highschool physics was that a battery has an excess of electron on one terminal, and a shortage on the other. This explanation caused some confusion when I thought about batteries in series; why does two 1,5V … Read more

Addition of a neutral electrolyte to water– how can it increase conductivity?

Sparked off by Is sea water more conductive than pure water because “electrical current is transported by the ions in solution”? This question really belongs on chemistry.SE, which is still in area 51. While answering this question, I realised that there was a flaw in the standard logic for these situations. Let’s take NaNO3 solution … Read more

Is there any reproducible tested evidence for Ni-H cold fusion? [closed]

Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Physics Stack Exchange. Closed 4 years ago. Improve this question The main replications of cold fusion, the ones that are beyond reproach, used Pd/d as the system. But commercial developers have often … Read more

Nernst Equation and Energy

I have a question regarding the Nernst equation and energy in a system. I know this is also a chemistry question, but I was interested in the thermodynamics (the energy of a system), so I decided to post it in Physics SE. Please let me know if I should move it to Chemistry. First, I … Read more

What is highest water pressure at which electrolysis can be performed?

What is highest water pressure at which electrolysis can be performed to derive hydrogen and oxygen? Does the dielectric constant of water, which which lowers as pressure increases, have an effect on this? Answer A high-pressure environment tends to favor liquids over gases, insofar as liquids have higher density. So the higher pressure it is, … Read more

Chemistry of electrical conductivity of pure water

I understand the electrical conductivity of pure water is very low, but not zero, and is due to the slight number of H+ and OH- ions naturally present. I understand that they will move under the influence of a potential difference and be the charge carriers for the resulting current. What I don’t understand is … Read more