# very basic question

Discussion in 'General Electronics Chat' started by bhuvanesh, Apr 13, 2014.

1. ### bhuvanesh Thread Starter Member

Aug 10, 2013
268
2
what is difference between volt per second and volt-second

2. ### studiot AAC Fanatic!

Nov 9, 2007
5,005
513
I hope you know that the per second means divided by seconds and the -seconds means multiplied by seconds.

Well the volt-second is another name for the unit of magnetic flux, the Weber.

http://en.wikipedia.org/wiki/Weber_(unit)

Volts per second is the time rate of change of voltage dv/dt.
So it is the slope of a voltage time graph, or the derivative of a voltage time function.

3. ### bhuvanesh Thread Starter Member

Aug 10, 2013
268
2
yet not answered for volt-sec.ist that both related to charging and discharging stuff."AA battery holds about 2.8 amp-hours."what does it mean.explain me detially.thank you in advance

4. ### odinhg Active Member

Jul 22, 2009
65
15
If you draw 1 amp from that battery, it will last 2.8 hours.
If you draw 2.8 amp from the same battery, it will last 1 hour.

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5. ### bhuvanesh Thread Starter Member

Aug 10, 2013
268
2
i think i am trigerred
1)2amp/hr means it produce 2 amp evry hour
2)2 amp-hr mean it discharges 2 amp in hour
am i right

6. ### studiot AAC Fanatic!

Nov 9, 2007
5,005
513

You should start a new thread for a new question.

Let us finish with the first question first.

What did you not understand?

7. ### bhuvanesh Thread Starter Member

Aug 10, 2013
268
2
when do we amp/sec and amp-sec
i started to think when i heard km /hr(i know).but dont know what is km-hr.

8. ### FuzzballJack New Member

Apr 12, 2014
13
3
U-oh ... Infinite loop
Vs => Ah => As => Kmh => Wait ... what? Kmh? That's silly. Give me an example of Kmh?

When you have a imaginary setup of 1V over 1 Ohm. there is 1 A/s flowing. That means it is happening now and you are measuring it. Every second there is one Amp flowing.
If you have an imaginary battery of 1 As that means it has a capacitance (it is capable) of 1 Amp for 1 second. It can deliver you 1 amp for one second OR(!) it can deliver you 0.5 amp for 2 seconds. It depends how much you need at one given time.

Hope it clears this out.
Fuzz

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9. ### bhuvanesh Thread Starter Member

Aug 10, 2013
268
2
yes its cleared me
when something in multiplication with time.it means some energy is available to do work
thanks
thank u so much for patience.and sorry for my poor english