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The most basic of all instrument is the

Q. The most basic of all the test instrument is the

 A   Multi-meter
 B   Ohm-meter
 C   Cathode Ray Oscilloscope
 D   Galvanometer
Answer:-Galvanometer
Explanation:  

A galvanometer is an electromechanical instrument for detecting and measuring electric current. The most common use of galvanometers was as analog measuring instruments, called ammeters, used to measure the direct current (flow of electric charge) through an electric circuit.

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