Current Electricity

Related Questions

• There are $n$ similar conductors each of resistance $R$. The resultant resistance comes out to be $x$ when connected in parallel. If they are connected in series, the resistance comes out to be

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• In a meter bridge, the balancing length from the left end (standard resistance of one ohm is in the right gap) is found to be 20 cm. The value of the unknown resistance is

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• The resistivity of a potentiometer wire is $$ and its area of cross-section is $8 \times {10^{ - 6}}\,{m^2}$. If 0.2 amp current is flowing through the wire, the potential gradient will be

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• Masses of 3 wires of same metal are in the ratio 1 : 2 : 3 and their lengths are in the ratio 3 : 2 : 1. The electrical resistances are in ratio

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• A galvanometer of 25 $\Omega$ resistance can read a maximum current of 6mA. It can be used as a voltmeter to measure a maximum of 6 V by connecting a resistance to the galvanometer. Identify the correct choice in the given answers

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