IB DP Physics: HL复习笔记11.2.9 Capacitors & Diode Bridges
Capacitors & Diode Bridges In rectification, to produce a steady direct current or voltage from an alternating current or voltage, a smoothing capacitor is necessary Smoothing is defined as: ...
IB DP Physics: HL复习笔记11.2.8 Rectification
Rectification Rectification is defined as: The process of converting alternating current and voltage into direct current and voltage Rectification is used in electronic equipment which requires a...
IB DP Physics: HL复习笔记11.2.7 Investigating Diode Bridges
Investigating Diode Bridges Aim of the Experiment The aim of the experiment is experimentally verify a half-bridge rectifier will produce partial DC output from AC input and a full wave bridge rect...
美国数学竞赛amc比赛时间2022公布，还有时间准备!
每年都有30多万学生参加，AMC什么来源？AMC属于数学学术活动，参与量大，在竞争中取得优异的成绩不仅可以作为数学方向的额外分数，而且在申请科学、工程、经济和商业方面也有一定的作用。这是学生改善背景的最佳...
IB DP Physics: HL复习笔记11.2.6 Diode Bridges
Diode Bridges Most electronic devices cannot use alternating current, they require direct current instead This is possible by use of a rectifier Rectifiers convert alternating current (ac) to direc...
IB DP Physics: HL复习笔记11.2.5 AC Electrical Power Distribution
AC Electrical Power Distribution Energy losses due to the heating of transmission lines in national power grids are significant This is because the electrical energy is transmitted across long dist...
IB DP Physics: HL复习笔记11.2.4 Transformer Calculations
Transformer Calculations The transformer equation is: Where: Ns = number of turns in the secondary coil Np = number of turns in the primary coil εs = output voltage from the secondary coil (V) εp =...
被牛津剑桥录取学生参加什么竞赛项目？
无论是英国牛剑还是美国藤校，科研学术活动都是招生官审核和面试的重要组成部分，也是申请人能否获得学校offer关键参考因素。被牛津剑桥录取学生参加什么学术活动项目？简单来说，参加学科学术活动可以帮助你在学...
IB DP Physics: HL复习笔记11.2.3 Step-Up & Step-Down Transformers
Step-Up & Step-Down Transformers A transformer is A device that changes high alternating voltage at low current to low alternating voltage at high current, and vice versa This is designed to re...
IB DP Physics: HL复习笔记11.2.2 Root-Mean-Square Current & Voltage
Root-Mean-Square Current & Voltage Direct current sources provide a constant voltage and current over time, making it easy to measure In situations involving alternating voltage and current, th...
IB DP Physics: HL复习笔记11.2.1 AC Generators
AC Generators If a coil of wire is rotated inside a magnetic field by an external force, an emf will be generated in the wire which causes current to flow within the coil The generator effect can b...
IB DP Physics: HL复习笔记11.1.4 Lenz’s Law
Lenz's Law Lenz’s Law is used to predict the direction of an induced e.m.f in a coil or wire Lenz's Law is summarised below: The induced e.m.f is set up in a direction to produce effects that oppos...
