Question

Two-point charges = +15and =
−5are separated by a distance of 12cm. What
is the magnitude of electrostatic force?

Answer 1

Electrostatics is a branch of physics that studies electric charges at rest. Since classical physics, it has been known that some materials, such as amber, attract lightweight particles after rubbing. The Greek word for amber, ήλεκτρον, or electron, was thus the source of the word 'electricity'.