Electrostatics And Mech Flashcards
Current
The rate of flow of charge
Potential difference
The work done per unit positive charge
Ohm’s law
Current through a conductor is directly proportional to the potential difference across a conductor at constant temperature
Resistance
A material’s opposition to the flow of electric current
Emf
The total energy supplied per coulomb of charge by the cell
Gravitational potential energy
The energy an object possesses due to its position relative to a reference point
Kinetic energy
The energy an object has as a result of the object’s motion
Mechanical energy
The sum of gravitational potential and kinetic energy at a point
The law of conservation of energy
The energy in a system cannot be created nor destroyed; only transferred from one form to another
The principle of conservation of mechanical energy
In the absence of air resistance or external forces, the mechanical energy of an object is constant
Positively charged
Electrons are removed making the object electron deficient
Negatively charged
Electrons are added giving the object an excess of electrons
Electrostatic force
The force exerted by static forces on each other
Electrostatic force convention
The electrostatic force between like charges is repulsive, opposite charges is attractive
The principle of conservation of charge
The net charge of an isolated system remains constant during any physical process
