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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentHard2 minPYQ_2023

PhysicsHardsingle choice

A galvanometer of resistance $20Ω$ gives a deflection of 5 divisions when $1 mA$ current flows through it. The galvanometer scale has 50 divisions. To convert the galvanometer into a voltmeter of range 25 volt, we should connect a resistance of

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Answer:

Solution:

$R ∴ R = \frac{V}{I _{g}} - G Here, I_{g} = \frac{50}{5} = 10 mA = \frac{25}{10 \times 1 0 ^{- 3}} - 20 = 2480Ω in series$

Stream:MHT_CETSubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument

⏱ 2mℹ️ Source: PYQ_2023

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