Calculating current

Discussion in 'The Projects Forum' started by pafrazier, May 14, 2013.

  1. pafrazier

    Thread Starter Active Member

    Jun 4, 2011
    57
    0
    HI,

    I am working with an energy harvesting cell that generates .5 volts. I want to calculate the current of cell. When I put a 10k ohm load across the cell the voltage drops to .120 volts across the cell and the load. Do I use .5/10000 or .120/10000 to calculate current?
    Thanks
     
  2. wayneh

    Expert

    Sep 9, 2010
    12,094
    3,033
    The latter, actually observed voltage across the load. The unloaded voltage is useful, but not for that calculation.
     
    pafrazier likes this.
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