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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentEasy2 minQB

PhysicsEasysingle choice

For full scale deflection of total $50$ divisions, $50 mV$ voltage is required in galvanometer. The resistance of galvanometer if its current sensitivity is $2 d i v / mA$ will be:

Options:

Answer:

Solution:

$C . S . = \frac{θ}{I _{g}}$

$I g = \frac{θ}{C . S .} = \frac{50 d i v}{2 d i v / mA} = 25 mA$

Potential difference $= 50 mV$

Resistance $= \frac{V}{I} = \frac{50 mV}{25 mA} = 2Ω$

Stream:JEESubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument

⏱ 2mℹ️ Source: QB

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