If a rod 10cm in length was measured as 10.5cm, calculate the percentage error
Answer Details
Percentage error is a measure of how accurately a measurement represents the true value of a quantity. It is calculated as the difference between the measured value and the true value, divided by the true value, and multiplied by 100 to get a percentage.
In this case, the true value of the rod's length is 10 cm and the measured value is 10.5 cm. To calculate the percentage error, we use the formula:
Percentage error = (|measured value - true value| / true value) * 100
= (|10.5 - 10| / 10) * 100
= (0.5 / 10) * 100
= 5%
Therefore, the percentage error is 5%.