Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentMedium2 minPYQ_2020
PhysicsMediumsingle choice

A galvanometer having full scale deflection current of10 mAand resistance8 Ωis joined in circuit as shown. When the terminalsAandBare used andCremains open, the range of the ammeter isI.When the terminalsAandCare used andBremains open, then the range of the ammeter is

Options:

Answer:
B
Solution:

WhenAandBis used

Ig=2I2+10

WhenAandCis used

Ig=4I4+8

2I12=4I12

I=I2

Stream:JEESubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument
2mℹ️ Source: PYQ_2020

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