Current and Amp hour

Discussion in 'Math' started by civic_driver, Mar 28, 2009.

  1. civic_driver

    Thread Starter New Member

    Mar 28, 2009
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  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
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    Q.8

    300 hours.

    The 1A current is drawn for ten minutes every hour. The AH drawn per hour is therefore (10/60)x1 or 1/6 AH per hour. the 50AH battery will last for

    50/(1/6) = 300 hours

    Q.9

    50 hours.

    On average the current is 1A - 50% time it is on at 2A % & 50% off.

    So 1AH is consumed each hour. The 50AH battery will last for 50 hours.
     
  3. civic_driver

    Thread Starter New Member

    Mar 28, 2009
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    I still don't get it. Can you explain the second one without using duty cycles? thanks
     
  4. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
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    Do you need help understanding duty cycles? Or the formula to calculate AH?

    On a test or real life, the numbers are different. In your case, understanding how the answer was attained is much more important than the actual answer.
     
  5. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
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    Half the time the battery supplies no current. The other half of the time, the battery supplies two amp. 50 AH / 2 A = 25 Hours. 25 hours is half of 50 hours. So the battery will last 50 hours.
     
  6. civic_driver

    Thread Starter New Member

    Mar 28, 2009
    3
    0
    I read up on duty cycles and now understand how the answer is attained. Thanks!
     
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