Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityEquivalent ResistanceMedium2 minPYQ_2023

PhysicsMediumsingle choice

A voltmeter of resistance $150Ω$ connected across a cell of e.m.f. $3 V$ reads $2.5 V$ . What is the internal resistance of the cell?

Answer:

Solution:

Internal resistance, $r = [\frac{E}{V} - 1] R = [\frac{3}{2.5} - 1] 150 = 30Ω$

Stream:MHT_CETSubject:PhysicsTopic:Current ElectricitySubtopic:Equivalent Resistance

⏱ 2mℹ️ Source: PYQ_2023

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