Class 12PhysicsElectric Potential and CapacitanceBasic of Capacitor and type of capacitor (Spherical, Cylindrical)
MediumAssume each oil drop has a capacitance of $C$. If $n$ drops are combined to form a bigger drop,then the capacitance of the bigger drop $C^{\prime}$ would be
- A$C^{\prime}=\frac{2 n^{1 / 3}}{3} C$
- B$C^{\prime}=\frac{5 n^{1 / 3}}{4} C$
- C$C^{\prime}=\frac{n^{1 / 3}}{5} C$
- D$C^{\prime}=C \cdot n^{1 / 3}$
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The magnitude of electric field $E$ in the annular region of a charged cylindrical capacitor:
The respective radii of the two spheres of a spherical condenser are $12 \; cm$ and $9 \; cm$. The dielectric constant of the medium between them is $6$. The capacity of the condenser will be
Medium
View SolutionEarth is assumed to be a charged conducting sphere having volume $V$ and surface area $A$. The capacitance of the earth in free space is ($\epsilon_0=$ permittivity of free space).
The Earth is assumed to be a charged conducting sphere having volume $V$ and surface area $A$. The capacitance of the Earth in free space is ($\epsilon_{0} =$ permittivity of free space).
Eight drops of mercury, each of same radius and same charge, combine to form a bigger drop. The ratio of the capacitance of the bigger drop to that of each smaller drop is: (in $ : 1$)
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