P4 ELECTROSTATICS Flashcards
Principle of charge quantisation
All charges in the universe consist of an integer multiple of the
charge on one electron.
principle of conservation of charge
The net charge of an isolated system remains constant during
any physical process.
polarisation of charges
The partial or complete polar separation of positive and negative electric
charge in a system.
coulombs law
The magnitude of the electrostatic force of attraction or repulsion exerted by one
point charge (Q1) on another point charge (Q2) is directly proportional to the product of the
magnitudes of the charges and inversely proportional to the square of the distance (r)
between their centres.
electric field
It is a region of space in which an electric charge experiences a force.
electric field (strength) at a point
It is the electrostatic force experienced per unit positive point
charge placed at that point.