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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityBatteryEasy2 minPYQ_2009

PhysicsEasysingle choice

A student measures the terminal potential difference (V) of a cell (of emf $ε$ and internal resistance $r$ ) as a function of the current (I) flowing through it. The slope and intercept of the graph between $V$ and $I$ , then respectively, equalNEET 2009 (Screening)

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Answer:

Solution:

According to Ohm's law $\frac{dV}{dI} = - r$ and $V = ε$ if $I = 0$ [As $V + Ir = ε$ ] $∴$ Slope of the graph $= - r$ and intercept $= ε$

Stream:NEETSubject:PhysicsTopic:Current ElectricitySubtopic:Battery

⏱ 2mℹ️ Source: PYQ_2009

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