An ammeter and a voltmeter of resistance $R$ are connected in series to an electric cell of negligible internal resistance. Their readings are $A$ and $V$ respectively. If another resistance $R$ is connected in parallel with the voltmeter
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(d) After connecting a resistance $R$ in parallel with voltmeter its effective resistance decreases. Hence less voltage appears across it i.e. $V$ will decreases. Since overall resistance decreases so more current will flow i.e. $A$ will increase.
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