A current of 10^{-3} A is flowing through a | vedclass

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(D) To measure the potential difference across a component accurately,the voltmeter is connected in parallel with it.If the voltmeter has a finite res

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$>> 1000 \ \Omega$

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(D) To measure the potential difference across a component accurately,the voltmeter is connected in parallel with it.If the voltmeter has a finite resistance,it draws some current from the circuit,which changes the potential difference being measured.To minimize this error,the voltmeter must have a very high resistance compared to the resistance across which the potential difference is being measured.An ideal voltmeter has an infinite resistance,so that it draws no current from the circuit.Therefore,for a resistance of $1000 \ \Omega$,the voltmeter resistance should be much greater than $1000 \ \Omega$ (i.e.,$>> 1000 \ \Omega$).

$A$ current of $10^{-3} \ A$ is flowing through a resistance of $1000 \ \Omega$. To measure the correct potential difference across this resistance,a voltmeter must be used whose resistance should be:

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