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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentEasy2 minPYQ_2020

PhysicsEasysingle choice

A millivoltmeter of $25 mV$ range is to be converted into an ammeter of $25 A$ range. The value (in ohm) of necessary shunt will be

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Answer:

Solution:

Galvanometer is converted into ammeter, by connecting a shunt, in parallel with it.

$\frac{G S}{G + S} = \frac{V_{G}}{I} = \frac{25 \times 10^{- 3}}{25}$

$\frac{G S}{G + S} = 0.001 Ω$

Here $S ≪ G so S = 0.001 Ω$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument

⏱ 2mℹ️ Source: PYQ_2020

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