A 600`Omega` resistor and a 400`Omega` resistor are connected in series across a 90-volt line. A voltmeter acros the `600Omega` resistor reads 45V. What is the value of the voltmeter resistance? If the same voltmeter is connected across the `400Omega` resistor, what will be its reading?

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Correct Answer - `1200 Omega,30 v`

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