Assignment

Which graph best represents the variation of electric potential as a function of distance from the centre of a uniformly charged solid sphere of charge of radius $R$ ?

Three charges $-q, Q$ and $-q$ are placed respectively at equal distances on a straight line. If the potential energy of the system of three charges is zero, then what is the ratio of $Q: q$ ?

In the circuit shown below $C_1=10\mu F,C_2=C_3=$ $20\mu F$, and $C_4=40\mu F$. If the charge on $C_1$ is $20\mu C$ then potential difference between $X$ and $Y$ is

In figure, four point $A, B, C$ and $D$ are located in the region of uniform electric field $E$. Select the correct option.

For the isolated charged conductor shown in the figure, if the electric field at point $A$ and $B$ is $E_A$ and $E_B$ respectively, then

A positive charge $q$ is carried slowly from a point, $x$ to point $y$ in an electric field of point charge $+Q$. The work done by external force is

In the following circuit the equivalent capacitance between points $A$ and $B$ is
(capacitance of each capacitor is $2\mu \mathrm{F}$)

Equivalent capacitance between $A$ and $B$ is