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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityBatteryEasy2 minPYQ_2014

PhysicsEasysingle choice

The denial cell is balanced on $125 cm$ length of a potentiometer. Now, the cell is short circuited by a resistance of $2Ω$ and the balance is obtained at $100 cm$ . The internal resistance of the denial cell is

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Solution:

Here, $r = R (\frac{I _{1}}{I _{2}} - 1) = 2 (\frac{125}{100} - 1)$ $= 2 (\frac{5}{4} - 1) = 2 \times \frac{1}{4} = 0.05Ω$

Stream:VITEEESubject:PhysicsTopic:Current ElectricitySubtopic:Battery

⏱ 2mℹ️ Source: PYQ_2014

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