Batteries Definition and 464 Threads

Hi everyone, I've tried searching over and over again in my textbook and online, but I can't seem to find anything about the specific nature of parallel batteries. So I have the following problem that I can't get anywhere with: There is a 6 ohms light bulb connected to two 1.5 V...

How do i find pottential differences between two points in such a circuit? Could anyone post a link to a page that can help explain such circuits, because i am greatly confused

Hi, I have a pretty straightforward problem that I am screwing up on for unknown reasons. Basically, it's about two D-cell 1.5-V babtteries connected in series. The give the current and you calculate the resistance and power -- simple enough. But then they ask by what factor would the...

Newly devised automobile batteries are sealed. When lead storage batteries discharge, they produce hydrogen. Do you know why sealed lead storage batteries have not been used in the past? Is it because the hydrogen gas is hazardous under such high pressure and back then, they couldn't sustain...

A little coursework question. In one of my sources, of research it says that "Graphite has a theoretical specific capacity of 372mAh/g, much higher than most other electrode materials that have proven their worth in the battery industry." I'm not sure if mAh/g is a measure of current vs...

What does a Battery powered Calculator do when it's batteries run dry?..does it still perform calculations?

really, what's the difference between a capacitor and a battery? and on a circuit diagram, do capacitors have current induced to keep a current? I've only taken first year physics in high school, and we haven't covered them yet, though when i came across some problems with capacitors...

I lost my calculator batteries in a flood... What's this equal? \left(\frac{256^{16}-1}{256^{16}}\right)^{256^{16}} a) 2.178 b) 1.000 c) .3679 d) 0.000

Question 1: Why use an iron core armature? I took an old electric motor apart to study it. I noticed the armature has windings around an iron core. Iron is used to concentrate the magnetic flux. But iron is also attracted to the electromagnets used to repell the armature windings! It seems to...

I have 4 of those big 6V batteries used mostly in flashlights. The batteries are almost dead and I really don't want to break the bank buying new ones. Can I just hook them up to my 9V battery charger (in parallel) and charge them? Will they hold a charge again? Will they explode?

I have a homework problem that asks me to find the charging capacity of a battery. I wasn't sure how to find this or what equation to use. I wasn't sure if the charging capacity was an equivalent to the capacitance. Can someone point me in the right direction? Note: I am given it's a 12 V...

Nickel-Cadmium (nicad) batteries have the strange tendency to stop working unless they are completely drained then completely recharged. If the batteries are fully charged, drained maybe 20% then charged again, and this is repeated several times, the batteries simply don't work any more. If the...

E=MC squared? Assuming this is correct which I assume it is, a rechargeable battery should weigh more when charged, compared to un charged, has anybody actually put this to the test?

Two questions here that I hope you can help with. 1) If an electrical current flows because of the attraction and repulsion between electrons and the terminals, do the electrons actually go though the battery? 2) I know that the battery does not put electrons into the circuit so, if the...