The magnitude of electric field $E$ in the annular region of a charged cylindrical capacitor
Is same throughout
Is higher near the outer cylinder than near the inner cylinder
Varies as $1/r$, where $r$ is the distance from the axis
Varies as $1/{r^2}$, where $r$ is the distance from the axis
The distance between the circular plates of a parallel plate condenser $40\,mm$ in diameter, in order to have same capacity as a sphere of radius $1\;metre$ is....$mm$
Two metal spheres of capacitance ${C_1}$ and ${C_2}$ carry some charges. They are put in contact and then separated. The final charges ${Q_1}$ and ${Q_2}$ on them will satisfy
Two metallic charged spheres whose radii are $20\,cm$ and $10\,cm$ respectively, have each $150\,micro - coulomb$ positive charge. The common potential after they are connected by a conducting wire is
The capacity of a spherical conductor in $ MKS$ system is
When we touch the terminals of a high voltage capacitor, even after a high voltage has been cut off, then the capacitor has a tendency to