Exponential Discharge in a Capacitor The Discharge Equation When a capacitor discharges through a resistor, the charge stored on it decreases?exponentially The amount of charge remaining on the cap...
Required Practical: Charging & Discharging Capacitors Aim of the Experiment The overall aim of this experiment is to calculate the capacitance of a capacitor. This is just one example of how th...
Charge & Discharge Curves Charging Curves Capacitors are charged by a?power supply?(e.g. a battery) When charging, electrons are 'pulled' from the plate connected to the positive terminal of th...
Energy Stored by a Capacitor When charging a capacitor, the power supply 'pushes' electrons to one of the metal plates It therefore does?work?on the electrons and?electrical energy?becomes stored o...
Capacitance Capacitors are electrical devices used to store energy in electronic circuits, commonly for a backup release of energy if the power fails Capacitors do this by storing electric?charge, ...
Using Field Lines & Equipotential Diagrams The direction of electric fields is represented by?electric?field?lines Electric field lines are directed from positive to negative Therefore, the fie...
Electric Potential for a Radial Field Electric Potential Energy In order to move a positive charge closer to another positive charge, work must be done to overcome the force of repulsion between th...
Electric Field between Parallel Plates The magnitude of the electric field strength in a?uniform?field between two charged parallel plates is defined as: Where: E?=?electric field strength?(...
Electric Field & Potential A positive test charge has electric?potential?energy?due to its position in an electric field The amount of electric potential energy depends on: The magnitude of cha...
