Current Electricity

Related Questions

• We are able to obtain fairly large currents in a conductor because

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• There are three voltmeters of the same range but of resistances $10000\,\Omega $, $8000\,\Omega $ and $4000\,\Omega $ respectively. The best voltmeter among these is the one whose resistance is

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• To convert a galvanometer into a voltmeter, one should connect a

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• Five resistors are connected as shown in the diagram. The equivalent resistance between $A$ and $B$ is

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• Two wires ‘A’ and ‘B’ of the same material have their lengths in the ratio 1 : 2 and radii in the ratio 2 : 1. The two wires are connected in parallel across a battery. The ratio of the heat produced in ‘A’ to the heat produced in ‘B’ for the same time is

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