1.how do you account for the difference between the stated value of voltage of t
ID: 1661004 • Letter: 1
Question
1.how do you account for the difference between the stated value of voltage of the battery and the measured value if they are different?2 and 3 posted 1. How do you account for the difference between the stated value of voltage of the battery and the measured value if they are different? 2. Is the measured value of the resistance correct? 3. When using DMM, how should you adjust the scaling when reading a voltage of an unknown source: from highest setting to lowest or from lowest setting to highest?Explanation / Answer
1) We can obtain the absolute error in the measurement as 'magnitude of difference between stated value and measured value'.
We can also divide this absolute error to stated value to get the fraction and then multiply it by 100, to obtain percentage error or difference.
2) We can check the resistance value using Ohm's law, V = IR.
If the measurement value and theoretical calculated value using above formula match, then the value is absolutely correct.
3) On DMM (digital multimeter), we should set it from highest to lowest to avoid any accidental damage.
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