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Moving coil instruments have a current and voltage rating of __________

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Moving coil instruments have a current and voltage rating of __________

(a) 100 A and 25 V

(b) 50 mA and 50 mV

(c) 75 nA and 100 μV

(d) 25 μA and 75 V

I had been asked this question in an interview for internship.

This interesting question is from Shunts and Multipliers topic in division Extension of Instrument Ranges of Electrical Measurements

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Correct choice is (b) 50 mA and 50 mV

The explanation: Moving coil instruments are designed to function as Ammeters and Voltmeters. They have a maximum current carrying capacity of 50 mA with a voltage rating of 50 mV.

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