Current Electricity

Related Questions

• A cell of $e.m.f.$$1.5\,V$ having a finite internal resistance is connected to a load resistance of $2\,\Omega $. For maximum power transfer the internal resistance of the cell should be

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• Two cells when connected in series are balanced on 8m on a potentiometer. If the cells are connected with polarities of one of the cell is reversed, they balance on 2m. The ratio of e.m.f.'s of the two cells is

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• The potential difference between points $A$ and $B$ of adjoining figure is

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• The internal resistance of a primary cell is 4 ohm. It generates a current of 0.2 amp in an external resistance of 21 ohm. The rate at which chemical energy is consumed in providing the current is

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• A current of 2 A flows in a system of conductors as shown. The potential difference $({V_A} - {V_B})$ will be

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