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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentEasy2 minPYQ_2020

PhysicsEasysingle choice

The emf of a cell is $6 V$ and internal resistance is $0.5$ $k Ω$ . The reading of a voltmeter having an internal resistance of $2.5$ $k Ω$ is

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Answer:

Solution:

Total resistance $= 2.5 + 0.5 = 3.0 k Ω = 3000 Ω$

$∴$ Current, $i = \frac{6}{3000} A$ ;

Reading of voltmeter $= i \times (2.5 \times 1000)$

$= \frac{6}{3000} \times 2500 = 5 V$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument

⏱ 2mℹ️ Source: PYQ_2020

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