Current-Potential Difference Graphs As the potential difference (voltage) across a component is increased, the current also increases (by Ohm’s law) The precise relationship between voltage ...
Electrical Power Work is also defined as a transfer of energy When components transfer electrical energy to other stores, work must be done because energy is transferred Therefore, potential differ...
Deriving Equations for Resistance in Series & Parallel Resistors In Series When two or more components are connected in series: The combined resistance of the components is equal to the sum of ...
Energy Conservation in Circuits The Electrical Voltages Rule (Kirchhoff's Second Law) Energy is never used up or lost in a circuit, since everything follows the Law of Conservation of Energy The el...
Charge Conservation in Circuits The Electric Current Rule (Kirchhoff's First Law) The electric current rule is defined as: The algebraic sum of the currents entering and leaving a junction is equal...
Defining Resistance Resistance Resistance is defined as the opposition to current It is further defined by Ohm's Law, which says that the resistance of a conductor is given by the ratio of p...
Potential Difference Potential Difference A cell makes one end of the circuit positive and the other negative This sets up a potential difference across the circuit This is sometimes known as the v...
Electric Current Electric Current Electric current is defined as: The rate of flow of charge It is measured in units of amperes (A) or amps The charge, current and time are related by the equation:...
决定出国必定就会面临一系列标化考试以及国际课程考试，这个时候一定要做好长远规划，从9年级就开始了解标化和国际课程的备考，通过时间轴进行合理规划，才能更高效。 美本申请所需要参加的考试，比如托福、AP、S...
