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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentMedium2 minPYQ_2021

PhysicsMediumsingle choice

A galvanometer has resistance ' $G$ ' $Ω$ and ' $I_{g}$ ' is current flowing through it which produces full scale deflection. ' $S_{1}$ ' is the value of shunt which converts it into an ammeter of range 0 to ' $3 I$ ' and ' $S_{2}$ ' is the shunt value which converts it into an ammeter of range 0 to ' $4 I$ ', the ratio $S_{2} : S_{1}$ is

Options:

Answer:

Solution:

$s_{1} = \frac{I _{g} G}{3 I - I _{g}}, s_{2} = \frac{I _{g} G}{4 I - I _{g}} ∴ \frac{s _{2}}{s _{1}} = \frac{3 I - I _{g}}{4 I - I _{g}}$

Stream:MHT_CETSubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument

⏱ 2mℹ️ Source: PYQ_2021

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