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  4. Two resistors are connected in series across a battery as shown in figure. If a voltmeter of resistance 2000 Ω is used to measure the potential difference across 500 Ω resister, the reading of the voltmeter will be V.

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Q. Two resistors are connected in series across a battery as shown in figure. If a voltmeter of resistance $2000\, \Omega$ is used to measure the potential difference across $500\, \Omega$ resister, the reading of the voltmeter will be___ $V$.Physics Question Image

JEE MainJEE Main 2022Current Electricity

Solution:

image
$I =\frac{20}{1000} A$
$V _{1}= I \times 400=\frac{20}{1000} \times 400$
$=8\, V$