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Two resistors, 400 Omega, " and "800 Ome...

Two resistors, `400 Omega, " and "800 Omega` are connected in series with a 6 battery. It is desired to measure the current in the circuit. An ammeter of `10 Omega` resistance is used for this purpose. The reading of ammeter will be `N/(1210)` A. Similarly, if a voltmeter of `1000 Omega` resistance is used to measure the potential difference across the `400 Omega` resistor, the reading of voltmeter is `P/19V`. Then the value of N and P are:

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