Kinetic energy of an electron accelerated in a potential difference of $100\, V$ is
$1.6 \times {10^{ - 17}}$ $J$
$1.6 \times {10^{21}}$ $J$
$1.6 \times {10^{ - 29}}$ $J$
$1.6 \times {10^{ - 34}}$ $J$
An alpha particle is accelerated through a potential difference of ${10^6}\,volt$. Its kinetic energy will be......$MeV$
A point charge $q$ is held at the centre of a circle of radius $r . B, C$ are two points on the circumference of the circle and $A$ is a point outside the circle. If $W_{A B}$ represents work done by electric field in taking a charge $q_0$ from $A$ to $B$ and $W_{A C}$ represents the workdone from $A$ to $C$, then
A point charge is surrounded symmetrically by six identical charges at distance $r$ as shown in the figure. How much work is done by the forces of electrostatic repulsion when the point charge $q$ at the centre is removed at infinity
The mean free path of electrons in a metal is $4 \times 10^{-8} \;m$. The electric field which can give on an average $2 \;eV$ energy to an electron in the metal will be in units of $V / m$
Prove that electrostatic forces are conservative in nature and define electrostatic potential energy.