The accepted value of a length measurement is 200cm, and the experimental value is 198cm. Circle the letter of the value that shows the precent error of this measuerment.
a)2%
b)-2%
c)1%
d)-1%
is it b)-2%
No. What is 2/200 * 100?
Percent error = deviation/GAAT * 100
gAAT generally accepted as true. Now watch signs...deviation = measured - GAAT
200cm= 2
To calculate the percent error for this measurement, we need to find the deviation, then divide it by the generally accepted value, and multiply by 100 to express it as a percentage.
Deviation = Experimental value - Accepted value
Deviation = 198 cm - 200 cm
Deviation = -2 cm
Percent error = (Deviation / Accepted value) * 100
Percent error = (-2 cm / 200 cm) * 100
Percent error = -1%
Therefore, the correct answer is d) -1%.
To calculate the percent error, we need to find the absolute value of the difference between the experimental value and the accepted value, and then divide it by the accepted value. Finally, multiply the result by 100 to get the percentage.
In this case, the experimental value is 198cm and the accepted value is 200cm.
The deviation is calculated as:
deviation = measured value - accepted value
deviation = 198cm - 200cm = -2cm
Now, let's find the percent error:
percent error = (|deviation| / accepted value) * 100
percent error = (|-2cm| / 200cm) * 100
percent error = (2cm / 200cm) * 100
percent error = 1%
Therefore, the correct answer is c) 1%.