1.

A(0 50A) moving coil ammet er has a volt age dr op of 0.1V across its terminals at full scale deflection. The external shunt resistance (in milliohms) needed to extend its range to (0 500A) is ______.

A. 0.22 to 0.23
B. 0.21
C. 0.13
D. 0.21 to 0.22
Answer» B. 0.21


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