IB DP Physics: SL復習筆記5.3.1 Primary & Secondary Cells
Primary & Secondary Cells Simple Cells A simple cell is a source of electrical?energy The simplest design consists of two electrodes made from metals of?different reactivity?immersed in an elec...
2022年美國Top30大學新開學院和專業(yè)盤點！
最近，除了新申請政策逐步揭幕以外，還有多所美國院校開設新的學院和專業(yè)，這就意味著新的申請機會。本次新專業(yè)的開放以理科、工科為主，也不乏商科、社科類新專業(yè)，正在選校定專業(yè)的同學，不要錯過這些新機遇哦...
IB DP Physics: SL復習筆記5.2.9 Potential Divider Circuits
Potential Divider Circuits When two resistors are connected in series, through?Kirchhoff’s Second Law, the potential difference across the power source is divided between them Potential dividers ar...
IB DP Physics: SL復習筆記5.2.8 Heating Effect of Current
Heating Effect of Current When electricity passes through a component, such as a resistor, some of the electrical energy is turned into heat, therefore, increasing its temperature The heat that is ...
2022年夏季A-Level考試成績即將放榜！出分后應該做什么？
時間已進入8月，各大考試局將會紛紛公布2022年夏季A-Level考試成績。 面對不同的A-Level考試成績，接下來又有哪些選擇呢？ 三大考試局夏季大考放榜時間 愛德思考試局 A-Level：2022年8月17日下發(fā)給考試中心，8月1...
IB DP Physics: SL復習筆記5.2.7 Series & Parallel Circuits
Series & Parallel Circuits The following statements for series and parallel circuits are a consequence of?Kirchhoff's first?and?second law In a?series?circuit: The current is the same at any po...
IB DP Physics: SL復習筆記5.2.6 Investigating Resistivity
Investigating Resistivity Aims of the Experiment The aim of the experiment is to determine the resistivity of a 2 metre constantan wire Variables: Independent variable?= Length,?L,?of the wire (m) ...
IB DP Physics: SL復習筆記5.2.5 Resistivity
Resistivity Resistance, Length and Cross-Sectional Area The?resistance?of a sample depends on: The material it is made of The length of the sample The cross-sectional area of the sample The resista...
IB DP Physics: SL復習筆記5.2.4 I-V Characteristics
Ohm's Law Ohm's law states that: For a conductor at a constant temperature, the?current?through it is?proportional to the?potential difference?across it An electrical component obeys Ohm’s law if i...
IB DP Physics: SL復習筆記5.2.3 Kirchhoff’s Circuit Laws
Kirchhoff's Circuit Laws Kirchhoff's First Law Kirchhoff’s first law states that: The sum of the?currents?entering a junction always equals the sum of the currents out of the junction A?junction?is...
IB DP Physics: SL復習筆記5.2.2 Resistance & Resistors
Resistance As?electrons?move through the metal wire of a circuit (or any other component), they transfer some of their electrical potential energy to the positive ions of the metal Free electrons c...
IB DP Physics: SL復習筆記5.2.1 Circuits
Circuit Diagrams The diagram below shows the various circuit symbols that could be used in circuit diagrams Common circuit symbols Functions of Most Common Components Switch:?it turns the circuit o...
