Force between $A$ and $B$ is $F$. If $75\%$ charge of $A$ is transferred to $B$ then force between $A$ and $B$ is
$\frac {F}{4}$
$4F$
$F$
None
Which of the following is a volt :
An insulator plate is passed between the plates of a capacitor. The the displacement current
A parallel plate capacitor is charged to a potential difference of $100\ V$ and disconnected from the source of emf. A slab of dielectric is then inserted between the plates. Which of the following three quantities change?
$(i)$ The potential difference $(ii)$ The capacitance $(iii)$ The charge on the plates
The charge $q$ on a capacitor varies with voltage as shown in figure. The area of the triangle $AOB$ is proportional to
The resultant capacitance between $A$ and $B$ in the fig. is…..$\mu F$
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