MCQ
The unit of electric permittivity is
- A$Volt/m^2$
- B$Joule/coulomb$
- ✓$Farad/m$
- D$Henry/m$
✓
Answer
Correct option: C.
$Farad/m$
c
(c) $C = \frac{{{\varepsilon _0}A}}{d}$ $⇒$ ${\varepsilon _0} = \frac{{Cd}}{A}$ $⇒$ ${\varepsilon _0}$ $⇒$ $\frac{{Farad \times m}}{{{m^2}}} \to \frac{F}{m}$
(c) $C = \frac{{{\varepsilon _0}A}}{d}$ $⇒$ ${\varepsilon _0} = \frac{{Cd}}{A}$ $⇒$ ${\varepsilon _0}$ $⇒$ $\frac{{Farad \times m}}{{{m^2}}} \to \frac{F}{m}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
As the temperature of a conductor increases, its resistivity and conductivity change. The ratio of resistivity to conductivity:
Which radiation in sunlight, causes heating effect
The magnetic susceptibility of any paramagnetic material changes with absolute temperature T as
The maximum electric field that can be held in air without producing ionisation of air is $10^7\,V/m$. The maximum potential therefore, to which a conducting sphere of radius $0.10\,m$ can be charged in air is
→If a metal cube of side $5\, cm$ has a charge of $6$ microcoulombs, then the surface charge density is
→In the given figure the total charge stored in the combination of capacitors is $100\,\mu C$. The value of ' $x$ ' is $............$.
→Equal charges $q$ are placed at the four corners $A,\,B,\,C,\,D$ of a square of length $a$. The magnitude of the force on the charge at $B$ will be
→The critical angle of a certain medium is ${\sin ^{ - 1}}\,\left( {\frac{3}{5}} \right)$. The polarization angle is
→Consider a mixture of oxygen and hydrogen kept at room temperature. AB compared to a hydrogen molecule an oxygen molecule hits the wall:
In the circuit shown in the figure $K_1$ is open. The charge on capacitor $C$ in steady state is $q_1$. Now key is closed and at steady state charge on $C$ is $q_2$. The ratio of charges $q_1/q_2$ is
→