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AQA 3.7 Fields
Fields are one of the great underlying ideas in physics. This topic looks at gravitational, electric and magnetic field and builds on previous topics you will already have covered earlier in the course.
3.7.1 Fields
3.7.2 Gravitational Fields
Gravitational Fields - The region where objects that have mass experience a force
Gravitational Potential - Potential energy and gravitational potential
Deriving Kepler's Third Law - A simple derivation you should remember
Satellites - The two main types of artificial satellite
Energy of a Satellite - The total energy of an orbiting body
Escape Velocity - Calculating the velocity needed to escape a gravitational field
3.7.3 Electric Fields
Electric Fields - A region where a charged object experiences a force
Electric Potential - The difference between electrical potential and electric potential energy
Particles in Electric Fields - The behaviour of charged particles in an electric field
3.7.4 Capacitance
Parallel Plate Capacitors - Parallel plate capacitors and the permittivity of free space
Capacitors - Charging, discharging and their exponential behaviour
Exponential Decay - Deriving the exponential decay function
3.7.5 Magnetic Fields
Magnetic Fields - Magnetic fields around various objects
Fleming's Left Hand Rule - Very handy when it comes to electromagnetism
Particles in Magnetic Fields - The behaviour of charged particles in a magnetic field
Deriving the Radius of a Charged Particle - The path of a charged particle in a B field
Motors - How electric motors work
Electromagnetic Induction - EM induction, magnetic flux and magnetic flux density
Generators - Generating electricity using an alternating current
Root Mean Square - Why RMS values are used in AC circuits
Transformers - How they are used to either step-up or step-down the voltage
Mass Spectrometer - How mass spectrometers use electric and magnetic fields to work
Required Practicals