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A battery with EMF of 9 V is connected in series with an ammeter and a voltmeter. Resistance of these devices are unknown. If the voltmeter is connected to a resistance (its value is also unknown) in parallel, the ammeter reading will be doubled, and the voltmeter reading halved. What will be the voltmeter reading (in V) after connecting the resistance ?

Answer» A battery with EMF of 9 V is connected in series with an ammeter and a voltmeter. Resistance of these devices are unknown. If the voltmeter is connected to a resistance (its value is also unknown) in parallel, the ammeter reading will be doubled, and the voltmeter reading halved. What will be the voltmeter reading (in V) after connecting the resistance ?






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