AQA A Level Physics - Fields
AC Current - ANS Current repeatedly changes direction
\AC Generator - ANS Rectangular coil that spins steadily in a uniform magnetic field, so flux
linkage and induced emf constantly changes
\Applications - ANS Stores little charge, releases quickly
\Area of capacitor - ANS If increased, more charge would be stored
\Capacitance - ANS charge stored per unit voltage
\Capacitor - ANS An electronic device that stores charge
\Capacitor Discharge - ANS Exponential decay, quantity decreases proportional to quantity left
\Capacitor discharge through a resistor - ANS Slow until 0, larger resistance, harder to move
electrons, longer discharge
\Circular Orbit - ANS no work done by the field, as the force is perpendicular to velocity, causing
centripetal acceleration
\Conductors - ANS Delocalised electrons are not bound to an atom
\Coulomb's Law - ANS Magnitude of 2 point charges is inversely proportional to distance
squared
\DC Generator - ANS EMF does not reverse polarity
\Dielectrics - ANS Electrically insulating, increase charge stored on plates
\Distance between plates - ANS If increased, capacitance would decrease
\Electric Field Lines - ANS Parallel to each other
right angle to plates
positive to negative
\Electric Field Strength - ANS Force per unit charge at a positive test charge
\Electric Fields - ANS Path free positive charge takes are field lines
\Electric Potential - ANS Work done per unit charge on small positive test charge when it's
moved from infinity to that point
\Electromagnetic Induction - ANS Moving a conducting wire through a magnetic field generates
electricity
\Electron beam - ANS beam follows circular path as direction of force is perpendicular to motion
\Electrostatic Force of repulsion - ANS decreases current as charge increases
\Equipotentials - ANS Constant potentials
Gravitational fields are weaker further away from the planet
\Escape Velocity - ANS Minimum velocity for an object to escape the planet when projected
vertically
\Faraday's Law - ANS Induced emf proportional to rate of change of magnetic flux linkage
\Field Factors - ANS As charge increases, so does field strength
\Field Lines - ANS Path of an object of small mass free falling
\Flemings Left hand rule - ANS For a generator
\Flemings right hand rule - ANS For a motor
\Geostationary Orbit - ANS Satellite appears stationary, so orbits above equator
\Gravitational Field Strength - ANS Force per unit mass in field
AC Current - ANS Current repeatedly changes direction
\AC Generator - ANS Rectangular coil that spins steadily in a uniform magnetic field, so flux
linkage and induced emf constantly changes
\Applications - ANS Stores little charge, releases quickly
\Area of capacitor - ANS If increased, more charge would be stored
\Capacitance - ANS charge stored per unit voltage
\Capacitor - ANS An electronic device that stores charge
\Capacitor Discharge - ANS Exponential decay, quantity decreases proportional to quantity left
\Capacitor discharge through a resistor - ANS Slow until 0, larger resistance, harder to move
electrons, longer discharge
\Circular Orbit - ANS no work done by the field, as the force is perpendicular to velocity, causing
centripetal acceleration
\Conductors - ANS Delocalised electrons are not bound to an atom
\Coulomb's Law - ANS Magnitude of 2 point charges is inversely proportional to distance
squared
\DC Generator - ANS EMF does not reverse polarity
\Dielectrics - ANS Electrically insulating, increase charge stored on plates
\Distance between plates - ANS If increased, capacitance would decrease
\Electric Field Lines - ANS Parallel to each other
right angle to plates
positive to negative
\Electric Field Strength - ANS Force per unit charge at a positive test charge
\Electric Fields - ANS Path free positive charge takes are field lines
\Electric Potential - ANS Work done per unit charge on small positive test charge when it's
moved from infinity to that point
\Electromagnetic Induction - ANS Moving a conducting wire through a magnetic field generates
electricity
\Electron beam - ANS beam follows circular path as direction of force is perpendicular to motion
\Electrostatic Force of repulsion - ANS decreases current as charge increases
\Equipotentials - ANS Constant potentials
Gravitational fields are weaker further away from the planet
\Escape Velocity - ANS Minimum velocity for an object to escape the planet when projected
vertically
\Faraday's Law - ANS Induced emf proportional to rate of change of magnetic flux linkage
\Field Factors - ANS As charge increases, so does field strength
\Field Lines - ANS Path of an object of small mass free falling
\Flemings Left hand rule - ANS For a generator
\Flemings right hand rule - ANS For a motor
\Geostationary Orbit - ANS Satellite appears stationary, so orbits above equator
\Gravitational Field Strength - ANS Force per unit mass in field
