question_answer

For measuring a low resistance by ammeter-voltmeter method, the voltmeter is connected directly across the resistance under measurement

A)  there is an error in measurement as the ammeter measures current flowing through the voltmeter in addition to the current flowing through the resistance under measurement

B)  there is an error in measurement as the voltmeter measures voltage drop across the ammeter in addition to that across the resistance under measurement

C)  both [a] and [b]

D)  none of above