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Measurements and Instrumentation

Q1: In measuring a resistance by voltmeter-ammeter method, the voltmeter can be connected either across supply or across the resistance. If the resistance is low, the voltmeters should be connected

A across the supply

B across the resistance

C either in two positions

D preferably across the supply

ANS:B - across the resistance

Since resistance is low current is high and voltage drop across ammeter is high. Therefore, voltmeter should be connected across resistance.



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