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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentEasy2 minQB

PhysicsEasysingle choice

An ammeter has resistance $R_{0}$ and range $i$ . What resistance should be connected in parallel with it to increase its range by $n i$ ?

Options:

Answer:

Solution:

Given, $i_{g} = i, G = R_{0}$ ;

$i_{1} = n i + i = (n + 1) i$

$∴ S = \frac{i_{g} G}{i_{1} - i_{g}} = \frac{i R_{0}}{(n + 1) i - i} = \frac{R_{0}}{n}$

Stream:JEESubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument

⏱ 2mℹ️ Source: QB

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