An ammeter and a voltmeter are connected in series to a battery with an emf E-6-0 V- When a certain resistance is connected in parallel with the voltmeter- the reading of the voltmeter decrease -2-0 times- whereas the reading of the ammeter increase the same number of times- Find the voltmeter reading after the connection of the resistance

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An ammeter and a voltmeter are connected in series to a battery with an emf $E = 6.0 V$ . When a certain resistance is connected in parallel with the voltmeter, the reading of the voltmeter decrease $η = 2.0$ times, whereas the reading of the ammeter increase the same number of times. Find the voltmeter reading after the connection of the resistance

2 V

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4 V

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8 V

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18 V

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9 V

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V

ii. The voltmeter resistance is V/I

iii. The potential difference across the ammeter is E V

iv. voltmeter resistance + ammeter resistance = E/I

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