Question

A student calculates the density of a copper cube to be 4.15 g/cm . If the accepted value is 8.64 g/cm the percentage error in his
experimental value is

Answer 1

 The percentage error in his experimental value is -51.97%.

What is percentage error?

This is the ratio of the error to the actual measurement, expressed in percentage.

To calculate the percentage error of the student, we use the formula below.

Formula:

• Error(%) = (calculated value-accepted value)100/(accepted............. Equation 1

From the question,

Given:

• Calculated value = 4.15 g/cm
• accepted value = 8.64 g/cm

Substitute these values into equation 1

• Error(%) = (4.15-8.64)100/8.64
• Error(%) = -4.49(100)/8.64
• Error(%) = -449/8.64
• Error(%) = -51.97 %

 

Hence, The percentage error in his experimental value is -51.97%.

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