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高中物理變得簡單 - 電和磁(第 2 部分,共 2 部分)

班級
玩
Brian Birbal
平均評分:4.6評論數量:(24)
我將分四個部分詳細解釋電和磁: 1.電磁學; 2. 家庭和社會用電; 3. 電子設備; 4. 讓電子設備發揮作用。
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課堂經歷

美國等級 9 - 12
這門課是在 英語講授的。
This session will take eight (8) classes to complete. It will deal with the following:-

1.	Class 1 & 2 – Electromagnetism
2.	Class 3 & 4 – Electricity for Home and Society
3.	Class 5 & 6 – Electronic Devices
4.	Class 7 & 8 – Putting Electronics to work.

1.	Electromagnetism

a.	describe an experiment that demonstrates the existence of a force on a current carrying conductor placed in a magnetic field
b.	sketch the resulting magnetic flux pattern when a current-carrying wire is placed perpendicularly to a uniform magnetic field
c.	apply Fleming‘s left-hand (motor) rule to predict what will happen when current direction is perpendicular to a uniform magnetic field
d.	recall that the force on a current-carrying conductor placed perpendicular to a magnetic field depends on the strength of the field and on the magnitude of the current
e.	draw diagrams to show and explain the action of the following applications of electromagnetic force:
–	a simple d.c. motor
–	a moving-coil galvanometer
f.	describe simple experiments that demonstrate an induced e.m.f. caused by changing magnetic flux
g.	predict the direction of induced current, given the direction of motion of a conductor and the direction of a magnetic field
h.	describe simple experiments to show how the magnitude of the e.m.f. induced in a conductor depends on the rate of change of magnetic flux experienced by the conductor
i.	explain the action of the simple alternating current (a.c.) generator
j.	sketch graphs to represent the output from a simple a.c. generator draw a diagram of a transformer
k.	give a simple explanation of the principles of operation of a transformer
l.	describe the features of a transformer that make for efficiency
m.	recall that, for an ideal transformer, Pout = Pin
n.	describe experiments to show that, for an ideal transformer,
o.	recall and apply the transformer formulas to solve simple numerical problems
p.	recall the advantages of using alternating current for transmission of electrical energy


2.	Electricity for Home and Society

a.	describe the main methods of electricity generation in the Caribbean
b.	describe the distribution of electrical energy from the generating station to the consumer
c.	describe electrical circuits used in the home, and discuss reasons for using series, parallel and ring connections
d.	state the international insulation colour code used on wires carrying electricity in the home
e.	relate electrical safety to correct wire sizes, suitable fuses or circuit breakers and earthing
f.	state the adverse effects of connecting electrical appliances to incorrect or fluctuating voltage supplies
g.	perform calculations on the cost of electrical energy expressed in kilowatthours (kWh)
h.	draw a diagram of a dry cell and explain the functions of its various parts;
i.	state the difference between primary and secondary cells, and their relative advantages and disadvantages
j.	draw a circuit diagram to show how a secondary cell can be recharged
k.	identify conversions of electrical energy to other forms and vice versa
l.	discuss the importance of conserving electrical energy, and means of doing so


3.	Electronic Devices

a.	state what is meant by thermionic emission
b.	describe the functioning of a cathode-ray tube and uses to which cathode-ray tubes are put
c.	represent both direct current (d.c.) and alternating current (a.c.) on current–time or voltage–time graphs
d.	use current–time or voltage–time graphs to find the period and frequency of alternating currents or voltages
e.	describe a semiconductor in terms of charge carriers and resistance
f.	draw a current vs. voltage characteristic (graph) to show the behaviour of a p-n junction
g.	describe how a semiconductor diode can be used in half-wave rectification
h.	sketch voltage–time graphs to compare the variation of voltage with time before and after rectification
i.	distinguish between direct current from batteries and rectified alternating current by consideration of their voltage–time graphs
j.	devise a simple test to determine whether a semiconductor diode is defective
k.	describe the behaviour of semiconductor devices such as thermistors and light dependent resistors (LDRs)


4.	Putting Electronics to Work

a.	describe the functioning of mechanical and electronic switches
b.	recall the symbols for AND, OR, NOT, NAND and NOR logic gates
c.	state the function of each gate with the aid of truth tables
d.	draw and analyse simple electronic circuits (e.g. alarm circuits and motor control circuits)
e.	draw and analyse circuit applications involving combinations of not more than three logic gates
f.	discuss the impact of electronic and technological advances on society
None.
提供的家庭作業
In order for each student to determine their own level of understanding of the High School Physics I will provide free of charge and outside of the sixty (60) minutes class questions to be answered. This of course is optional and solely based on the individual student. I would urge ALL students to answer as many questions as possible so that they would know where they need to improve, but it is optional.
2 - 4 每週課外時間
提供的評估
Every class will have questions to be answered outside of the sixty (60) minutes class. This questions and answers will be done free of charge, as it will not be part of the sixty (60) minutes class.
提供的成績
None.
學習者無需使用標準 Outschool 工具以外的任何應用程式或網站。
I will present experiments via the document that I will be teaching from and some experiments if conducted may need parental supervision. These experiments do not need to be executed and are just for knowledge. But if a student has the capability to execute then they are free to do so. These experiments are usually conducted in a lab which is a controlled environment. If a student does not have a safe environment to conduct a parent should NOT allow any student to conduct any experiments.
During the course of seventeen (17) years I have compiled a complete High School Physics tutorial that I have assembled from various text books to keep up with the changing syllabus, as well as to cater for the various learning levels of every student that I have taught. I have tutored to students that were getting Fs and Ds elevated them to Bs and As.
平均評分:4.6評論數量:(24)
教師檔案
I have been a Mathematics and Physics private tutor for the past seventeen (17) years. During that time, I have tutored over four hundred (400) students ages 15 to 18 who were not very academically inclined and who were getting Fs and Ds and... 
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US$15

每週或US$120 用於 8 課程
1x 每週, 8 週
60 分鐘

即時視訊會議
Ages: 15-18
3-12 每班學員人數

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