Current Electricity

Related Questions

• The resistivity of iron is $1 \times {10^{ - 7}}\,ohm - m$. The resistance of a iron wire of particular length and thickness is 1 ohm. If the length and the diameter of wire both are doubled, then the resistivity in $ohm - m$ will be

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• For the network shown in the figure the value of the current $i$ is

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• In the figure given the value of $X$ resistance will be, when the p.d. between B and D is zero

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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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• Match the List I with the List II from the combination shown. In the left side (List I) there are four different conditions and in the right side (List II), there are ratios of heat produced in each resistance for each condition :

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