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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityCircuit AnalysisEasy2 minPYQ_2020

PhysicsEasysingle choice

Two sources of equal E.M.F. are connected to an external resistance $R$ . The internal resistances of the two sources are $R_{1}$ and $R_{2}$ $(R_{2} > R_{1})$ . If the potential difference across the source having internal resistance $R_{2}$ is zero, then

Options:

Answer:

Solution:

$I = \frac{2 E}{R_{1} + R_{2} + R}$

$∵ E - {IR}_{2} = 0$ (Given)

$∴$ $E = {IR}_{2}$

or $E = \frac{2 {ER}_{2}}{R_{1} + R_{2} + R}$

or $R_{1} + R_{2} + R = 2 R_{2}$

or $R = R_{2} - R_{1}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Current ElectricitySubtopic:Circuit Analysis

⏱ 2mℹ️ Source: PYQ_2020

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