A galvanometer deflects full scale for a current of 135 ?A and has a resistance
ID: 2091353 • Letter: A
Question
A galvanometer deflects full scale for a current of 135 ?A and has a resistance of 15 Ohm. A shunt resistor is added to this galvanometer to use it as a 30 A full-scale ammeter. What is the equivalent resistance of this galvanometer after it is modified? Answer in units of Ohm.A galvanometer deflects full scale for a current of 135 ?A and has a resistance of 15 Ohm. A shunt resistor is added to this galvanometer to use it as a 30 A full-scale ammeter. What is the equivalent resistance of this galvanometer after it is modified? Answer in units of Ohm.
Explanation / Answer
Req =15*135/30 =67.5 micro ohm
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