Magnetic Flux Density Definition The magnetic flux density?B?is defined as: The force acting per unit current per unit length on a current-carrying conductor placed perpendicular to the magn...
Fleming's Left Hand Rule The?direction?of the force on a charge moving in a?magnetic field?is determined by the direction of the magnetic field and the current Recall that the direction of t...
Magnetic Force on a Current-Carrying Conductor A current-carrying conductor produces its own?magnetic field When interacting with an external magnetic field, it will experience a?force  ...
A-level生物有兩大難點，一是知識太多太雜，需要記憶的內(nèi)容很多，二是生物涉及的數(shù)學(xué)部分，也讓很多數(shù)學(xué)底子不太好的同學(xué)感到頭疼。今天就一起來看看學(xué)習(xí)A-level生物必須要掌握的數(shù)學(xué)技能及知識點！ A-level生物...
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...
Capacitor Discharge Equation The?time constant?is used in the exponential decay equations for the current, charge or potential difference (p.d) for a capacitor discharging through a resistor...
The Time Constant The time constant of a capacitor discharging through a resistor is a measure of how long it takes for the capacitor to discharge The definition of the time constant is: The...
Capacitor Charge & Discharge Graphs Charging Capacitors are charged by a?power supply?(eg. a battery) When charging, the electrons are pulled from the plate connected to the positive ter...
Energy Stored by a Capacitor When charging a capacitor, the power supply pushes electrons from the positive to the negative plate It therefore does?work?on the electrons and?electrical energ...
