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An ammeter and a voltmeter of resistance `R` connected in seires to an electric cell of negligible internal resistance. Their readings are `A` and `V` respecitvely. If another resistance `R` is connected in parallel with the voltmeterA. Both `A` and `V` will increaseB. Both `A` and `V` will decreaseC. `A` will decrease and `V` will increaseD. `A` will decrease and `V` will decrease |
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Answer» Correct Answer - D (d) After connecting a resistance `R` in parallel with voltmeter, its effective resistance decreases. Hence, less voltage appears across it i.e., `V` will decrerases. Since overall resistance decreases so more current will flow i.e., `A` will increase. |
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