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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentMedium2 minPYQ_2011

PhysicsMediumsingle choice

A galvanometer of resistance, $G$ is shunted by a resistance $S ohm$ . To keep the main current in the circuit unchanged, the resistance to be put in series with the galvanometer isNEET 2011 (Mains)

Options:

Answer:

Solution:

Current will be unchanged if resistance remains same so
$G = \frac{GS}{G + S} + R R = G - \frac{GS}{G + S} R = \frac{G ^{2}}{G + S}$

Stream:NEETSubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument

⏱ 2mℹ️ Source: PYQ_2011

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