A certain type of rechargeable battery is capable of delivering a current of 0.2A for 4000s , before its voltage drops and it needs to be recharged.
Calculate: The total charge the battery can deliver before it needs to be recharged
The maximum time it could be used for without being recharged if the current through it were 0.5A

Question

A certain type of rechargeable  battery is capable of delivering a current of 0.2A for 4000s , before its voltage drops and it needs to be recharged.
Calculate: The total charge the battery can deliver before it needs to be recharged
The maximum time it could be used for without being recharged if the current through it were 0.5A

anonymous · Answer

@AakashSudhakar

anonymous · Answer

charge = Current*time

anonymous · Answer

yes.. and taht was the clue to help you :P

anonymous · Answer

@dan815

anonymous · Answer

Hey I just gave you a clue, and you ignored it :O

anonymous · Answer

it says calculate the total charge

anonymous · Answer

And I told you how to calculate that

anonymous · Answer

I think there's something useless involved anyway thanks

anonymous · Answer

else even

anonymous · Answer

The current is given 0.2A

the time is given 4000 sec

you have to calculate charge.. 

and i told you the formula charge = current * time.. can't you calculate now?

anonymous · Answer

Lol i know but the total charge has a different equation I think

anonymous · Answer

No. its the same thing!

if i asked you what is total sum of 5 and 6.. isn't it the same as sum of 5 and 6?

anonymous · Answer

lol sorry thanks !!!

anonymous · Answer

what about the second bullet point in my question

anonymous · Answer

first tell me the total charge answer!

anonymous · Answer

800A

anonymous · Answer

good.. but charge is not ampere.. what is the unit?

anonymous · Answer

C

anonymous · Answer

Correct.. 
now for the second one.. you again use the same equation
this time
you know the charge (or total charge.. same thing)
and you know the current (new current 0.5 A)
find the time!

anonymous · Answer

1600s

anonymous · Answer

?

anonymous · Answer

yes!
good.. there you solved it now :P

anonymous · Answer

thank you @Mashy

anonymous · Answer

No problem! Next time don't ignore my clues :P

anonymous · Answer

sorry my friend was telling me something different and by the way when we using this equation and get decimals for example do we round the answer up or can you leave it  as a decimal

anonymous · Answer

That actually depends upon what level course you are dealing with

if concepts of significant figures are taught to you, there are rules ... else there is no such hard and fast rule!

anonymous · Answer

ok