Current Electricity

Related Questions

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• Two resistances of 400 $\Omega$ and 800 $\Omega$ are connected in series with 6 volt battery of negligible internal resistance. A voltmeter of resistance 10,000 $\Omega$ is used to measure the potential difference across 400 $\Omega$. The error in the measurement of potential difference in volts approximately is

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• If the ammeter in the given circuit reads 2 A, the resistance R is

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• A Daniel cell is balanced on 125$cm$ length of a potentiometer wire. Now the cell is short-circuited by a resistance 2 ohm and the balance is obtained at 100$cm$. The internal resistance of the Daniel cell is

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• The resistance of a wire is $10\,\Omega $. Its length is increased by 10% by stretching. The new resistance will now be

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