Tag: electric current, potential difference and resistance
Questions Related to electric current, potential difference and resistance
An aluminium (Al) rod with area of cross-section $4\times 10^{-6}m^2$ has a current of 5A. Flowing through it. Find the drift velocity of electron in the rod. Density of $Al=2.7\times 10^3kgm^{-3}$ and atomic wt.=27. Assume that each Al atom provides one electron.
When you flip a switch to turn on a light, the delay before the light turns on is determined by :
A vertical wire carries a current in upward direction. If an electron beam sent horizontally towards the wire, then it will deflected.
If the strenath of the majestic field produced $10 \mathrm { cm }$ away from a infinitely long straight conductor is $10 ^ { - 5 } \text { weber/m } ^ { 2 }$ the value of the current flowing in the conductor will be:
If current density in a conducting wire is proportional to the distance r from the axis of the conductor, then find magnetic field at the position r<R , where R is the radius of cross section of the conductor.('i'is the current in conducting wire)
Electric current flows from positive terminal of battery to negative terminal.
Two conducting parallel plates areseparated by a distance of 0.001$\mathrm { m } . \mathrm { A } 9 \mathrm { V }$battery is connected across the plates.Find out the electric field between the plates?
The number of free electrons passing through the filament of an electric lamp is one hour when the current through the filament is 0.32 A will be
The current density $ \bar { j } $ at cross-sectional area $ \bar { A } = (2 \hat {i} + 4 \hat {j} )mm^{-2}$ is $(2 \hat {j} + 2 \hat {k} ) A m^{-2} $ The current following through the cross-sectional area is
A flow of $10^{12}$ electrons per minute in a conducting wire constitutes a current of