Similar charges are placed at corners of a square and a charge $q_0$ is placed at it's centre find net force on it
$2\sqrt 2 \frac{{kq{q_0}}}{{{r^2}}}$
$\sqrt 2 \frac{{kq{q_0}}}{{{r^2}}}$
$\frac{{2kq{q_0}}}{{{r^2}}}$
$\frac{1}{{2\sqrt 2 }}\frac{{kq{q_0}}}{{{r^2}}}$
Three charges are placed at the vertices of an equilateral triangle of side ‘$a$’ as shown in the following figure. The force experienced by the charge placed at the vertex $A$ in a direction normal to $BC$ is
There are two charges $+1$ microcoulombs and $+5$ microcoulombs. The ratio of the forces acting on them will be
Check that the ratio $ke ^{2} / G m _{ e } m _{ p }$ is dimensionless. Look up a Table of Physical Constants and determine the value of this ratio. What does the ratio signify?
$ + 2\,C$ and $ + 6\,C$ two charges are repelling each other with a force of $12\,N$. If each charge is given $ - 2\,C$ of charge, then the value of the force will be
Positive charge $Q$ is distributed uniformly over a circular ring of radius $R$. A point particle having a mass $(m)$ and a negative charge $-q$ is placed on its axis at a distance $x$ from the centre. Assuming $x < R,$ find the time period of oscillation of the particle, if it is released from there [neglect gravity].