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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentMedium2 minQB

PhysicsMediumsingle choice

$A B$ is a wire of uniform resistance. The galvanometer $G$ shows no deflection when the length $A C = 20$ cm and $CB = 80$ cm. The resistance $R$ is equal to

Options:

Answer:

Solution:

At balance (Wheatstone condition):

$\frac{R}{80} = \frac{A C}{CB} = \frac{20}{80}$

$R = 20 Ω$

Stream:JEESubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument

⏱ 2mℹ️ Source: QB

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