Fields and Circuits Definitions Flashcards
Work
The product of the displacement and the component of the force parallel to the displacement
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
Law of conservation of energy
The total energy in a system cannot be created nor destroyed, only transformed from one form to another
Work-energy theorem
The work done by a net force on an object is equal to the change in the kinetic energy of the object
Power
The rate of which work is done / the rate at which energy is transferred
Newton’s Law of Universal Gravitation
Every particle with mass in the universe attracts every other particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres
Weight
The gravitational force the Earth exerts on any object on or near its surface
Gravitational field strength
A region in space where a mass will experience a force
Gravitational field
The force acting per unit mass
Coloumb’s Law
Two point charges exert forces on each other. The force is directly proportional to the product of the charges and inversely proportional to the square of the distance between the chargers
Electric field strength
A region of space in which an electric charge experiences a force. The direction of the electric field at a point is the direction that a positive test charge would move if placed at that point
Electrical field
The force per unit positive charge
Potential Difference
The work done per unit positive charge
Current
The rate of flow of charge
