Magnetic Force on a Current-Carrying Conductor A current-carrying conductor produces its own?magnetic field An?external magnetic field?will therefore exert a?magnetic?force?on it A current-c...
Magnetic Force on a Charged Particle The magnetic force on an isolated moving charged particle, such as a proton, is given by the equation: F?=?BQv Where: F?= magnetic force on the particle (N) B?=...
Magnetic Flux, Flux Density & Flux Linkage Magnetic Flux Density The strength of a magnetic field is defined by the density of the magnetic field lines, or?magnetic flux density, at that point ...
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, ...
轉眼開學已有一個多月，國內各省市陸續發布新學期階段學習/考試等政策，和體制內一樣，英國教育部也在“黃金九十月”發布GCSE最新政策。 9月下旬，英國教育部(Department of Education)和考試監管機構Ofqual(The Of...
