An instrument always extracts some energy from the measured medium. Thus the measured quantity is always disturbed by the act of measurement, which makes a perfect measurement theoretically impossible and it is due to

An instrument always extracts some energy from the measured medium. Th

1.	An instrument always extracts some energy from the measured medium. Thus the measured quantity is always disturbed by the act of measurement, which makes a perfect measurement theoretically impossible and it is due to
A.	Skin effect
B.	Inductive effect
C.	Loading effect
D.	Lorenz effect
Answer» D. Lorenz effect

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An instrument always extracts some energy from the measured medium. Thus the measured quantity is always disturbed by the act of measurement, which makes a perfect measurement theoretically impossible and it is due to

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