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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentEasy2 minPYQ_2010

PhysicsEasysingle choice

A galvanometer has a coil of resistance $100Ω$ and gives a full scale deflection for $30 mA$ current. If it is to work as a voltmeter of $30 V$ range, the resistance required to be added will beNEET 2010 (Screening)

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Solution:

Required resistance $R = \frac{V}{i _{g}} - G$ $= \frac{30}{30 \times 1 0 ^{- 3}} - 100 = 900Ω$

Stream:NEETSubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument

⏱ 2mℹ️ Source: PYQ_2010

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