Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityBatteryMedium2 minPYQ_2018

PhysicsMediumsingle choice

A battery consists of a variable number 'n' of identical cells (having internal resistance 'r' each) which are connected in series. The terminals of the battery are short-circuited and the current $I$ is measured. Which of the graphs shows the correct relationship between $I$ and n?NEET 2018

Options:

Answer:

Solution:

In series, $ε_{n e t} = n ε$

and $r_{n e t} = n r$

current in circuit
$I = \frac{n ε}{n r} = \frac{ε}{r} =$ constant.

$\Rightarrow I$ independent of $n$

Stream:NEETSubject:PhysicsTopic:Current ElectricitySubtopic:Battery

⏱ 2mℹ️ Source: PYQ_2018

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