AQA A Level Physics复习笔记7.6.1 Capacitance
Capacitance Capacitors are electrical devices used to store energy in electronic circuits, commonly for a backup release of energy if the power fails They are in the form of two conductive m...
AQA A Level Physics复习笔记7.5.3 Work Done on a Charge
Work Done on a Charge When a mass with charge moves through an electric field, work is done The work done in moving a charge q is given by: ?W?=?q?V Where: ?W?= change in work done (J) q?= c...
AQA A Level Physics复习笔记7.5.2 Graphical Representation of Electric Potential
Graphical Representation of Electric Potential Electric field strength,?E?and the?electric potential,?V?can be graphically represented against the distance from the centre of a charge,?r E, ...
AQA A Level Physics复习笔记7.5.1 Electric Potential
Electric Potential In order to move a positive charge closer to another positive charge, work must be done to overcome the force of repulsion between them Similarly, to move a positive charg...
AQA A Level Physics复习笔记7.4.7 Comparing Gravitational & Electrostatic Forces
Electric Potential In order to move a positive charge closer to another positive charge, work must be done to overcome the force of repulsion between them Similarly, to move a positive charg...
AQA A Level Physics复习笔记7.4.7 Comparing Gravitational & Electrostatic Forces
Gravitational v Electrostatic Forces The similarities and differences between gravitational and electrostatic forces are listed in the table below: Table Comparing G and E Fields The ...
AQA A Level Physics复习笔记7.4.6 Radial Electric Field
Electric Field of a Point Charge The?electric field strength?describes how strong or weak an electric field is at that point A?point charge?produces a?radial?field A charge sphere also acts ...
AQA A Level Physics复习笔记7.4.5 Motion of Charged Particles
Motion of Charged Particles in an Electric Field A charged particle in an electric field will experience a force on it that will cause it to move If a charged particle remains still in a uni...
AQA A Level Physics复习笔记7.4.4 Uniform Electric Field
Uniform Electric Field Strength The magnitude of the electric field strength in a?uniform?field between two charged parallel plates is defined as: Where: E?=?electric field strength?(V m-1) ...
