When air is replaced by a dielectric medium of constant $k$, the maximum force of attraction between two charges separated by a distance
become ${k^{ - 1}}$ times
Remains unchanged
Increases $k$ times
become ${k}$ times
If two charges of $1$ coulomb each are placed $1 \,km$ apart, then the force between them will be ........... $N$
Three point charges are placed at the corners of an equilateral triangle. Assuming only electrostatic forces are acting
Three points charges are placed at the corners of an equilateral triangle of side $L$ as shown in the figure.
Consider the charges $q, q$, and $-q$ placed at the vertices of an equilateral triangle, as shown in Figure. What is the force on each charge?
According to Coulomb's Law, which is correct relation for the following diagram?