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Thread: Percentage error

  1. #1 Percentage error 
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    Hi,

    so I have been set a question to find a percentage error of an experiement. But it looks like to me I have not been told all the information I need? I may well be mistaken here.

    The formula I have been given is:
    Percent error = (Experimental value - theoretical value) / (theoretical value) x 100%

    Then the question set is:

    An electric current might be meassured as (2.0 + or - 0.02) amperes.

    The symbol for amperes is A.

    This means the error is + or - 0.02 A, and the true current is somewhere between
    (2.0 - 0.02) A and (2.0 + 0.02) A
    It lies between 1.98 A and 2.02 A

    Calculate the percentage error in this instance?
    I can't work out which bits I substitute into the formula.

    Make sense to anyone?


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  3. #2  
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    .02/2=.01=1 percent


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  4. #3  
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    That was the conclusion I originally came to, but wasn't sure if it was right. Thanks!
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  5. #4  
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    It's right.
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