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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentEasy2 minPYQ_2020

PhysicsEasysingle choice

Two galvanometers ' $A$ ' and 'B' require currents of $4 mA$ and $7 mA$ , respectively to produce the same deflection of 20 divisions. If ' $S_{A}^{'}$ and $^{'} S B^{'}$ are their sensitivities, respectively, then

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Answer:

Solution:

(D) $sensitivity S \frac{S _{A}}{S _{B}} ∴ S_{A} > S_{B} = \frac{θ}{I} = \frac{I _{B}}{I _{A}} = \frac{7}{4}$

Stream:MHT_CETSubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument

⏱ 2mℹ️ Source: PYQ_2020

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