Current Electricity

Related Questions

• The resistance of 10 metre long potentiometer wire is 1ohm/meter. A cell of e.m.f.2.2 volts and a high resistance box are connected in series to this wire. The value of resistance taken from resistance box for getting potential gradient of 2.2 millivolt/metre will be

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• The equivalent resistance between points A and B of an infinite network of resistances each of $1\,\Omega $ connected as shown, is

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• The e.m.f. of a cell is E volts and internal resistance is $r$ohm. The resistance in external circuit is also$r$ohm. The p.d. across the cell will be

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• A milliammeter of range 10 mA has a coil of resistance 1 $\Omega$. To use it as voltmeter of range 10 volt, the resistance that must be connected in series with it, will be

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• Resistors of 1, 2, 3 ohm are connected in the form of a triangle. If a 1.5 volt cell of negligible internal resistance is connected across 3 ohm resistor, the current flowing through this resistance will be

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