List of top Physics Questions on electrostatic potential and capacitance asked in COMEDK UGET

A particle $A$ has charge $+q$ and particle $B$ has charge $+4q$, each of them having the same mass $m$. When allowed to fall from rest through the same? electrical potential difference, the ratio of their speeds will become
Dielectric constant of a metal is
Energy of a charged capacitor is $E$. It is allowed to share its charge with an identical capacitor charged to half its potential. Loss in the energy of the system is
A number of capacitors labelled as $8 \, \mu F, 250 \, V$ are given. Minimum number of capacitors needed to get an arrangement equivalent to $10 \, \mu F, 1000 \, V$ is
A free unit positive charge is kept at a distance $r$ along the equatorial line from two equal like charges $+Q_1$ and $+Q_2$. The unit positive charge