A current of $2\,A$ flows through a wire of crosssectional area $25.0\,mm ^2$. The number of free electrons in a cubic meter are $2.0 \times 10^{28}$. The drift velocity of the electrons is $...............\times 10^{-6}\,ms ^{-1}$ (given, charge on electron $=1.6 \times 10^{-19}\,C$ )
JEE MAIN 2023, Easy
Download our appand get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
Similar Questions
- 1View SolutionThe brightness of a bulb will be reduced, if a resistance is connected in
- 2View SolutionSensitivity of potentiometer can be increased by
- 3At what temperature will the resistance of a copper wire become three times its value at $0\,^oC$ ................. $^oC$ (Temperature coefficient of resistance for copper = $4 × 10^{-3} \,per\, \,^oC$ )View Solution
- 4Determine the charge on the capacitor in the following circuit ................ $\mu C$View Solution
- 5In the figure shown the power generated in $y$ is maximum when $y = 5\,\Omega $. Then $R$ isView Solution
- 6In the network shown below, the charge accumulated in the capacitor in steady state will be ........... $\mu C$View Solution
- 7A cylindrical metal wire of length $l$ and cross sections area $S$, has resistance $R$, conductance $G$, conductivity $\sigma$ and resistivity $\rho$. Which one of the following expressions for $\sigma$ is validView Solution
- 8A heater draws a current of $2\,A$ when connected to a $250\,V$ source. The rate of energy dissipation is ............. $W$View Solution
- 9The capacitor $C$ is initially without charge.$X$ is now j oined to $Y$ for a long time, during which $H_1$ heat is produced in the resistance $R$. $X-Y$ connection is removed and $X$ is now joined to $Z$ for a long time, during which heat $H_2$ is produced in $R$.View Solution
- 10A wire has resistance of $24\,\Omega$ is bent in the following shape. The effective resistance between $A$ and $B$ is .............. $\Omega$View Solution
