Current Electricity

Related Questions

• The internal resistance of a cell of e.m.f. 12V is $5 \times {10^{ - 2}}\,\Omega $. It is connected across an unknown resistance. Voltage across the cell, when a current of 60 A is drawn from it, is

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• A torch battery consisting of two cells of 1.45 volts and an internal resistance $0.15\,\Omega $, each cell sending currents through the filament of the lamps having resistance 1.5ohms. The value of current will be

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• In a potentiometer experiment, the galvanometer shows no deflection when a cell is connected across 60 cm of the potentiometer wire. If the cell is shunted by a resistance of $6\,\Omega $, the balance is obtained across 50 cm of the wire. The internal resistance of the cell is

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• In hydrogen atom, the electron makes $6.6 \times {10^{15}}$ revolutions per second around the nucleus in an orbit of radius $0.5 \times {10^{ - 10}}m$. It is equivalent to a current nearly

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• If you are provided three resistances $2 \Omega$, $3 \Omega$ and $6 \Omega$. How will you connect them so as to obtain the equivalent resistance of $4 \Omega$

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