Edexcel A Level Physics:復(fù)習(xí)筆記3.3 Ohm's Law
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...
Edexcel A Level Physics:復(fù)習(xí)筆記3.2 Potential Difference
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...
Edexcel A Level Physics:復(fù)習(xí)筆記3.1 Electric Current
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:...
UCL 2023入學(xué)ALevel、IB成績(jī)要求！
英國名校眾多，其中G5大學(xué)代表了英國最高研究和學(xué)術(shù)水平，因此，G5大學(xué)對(duì)申請(qǐng)者的成績(jī)要求都是“沒有最高只有更高”。今天就一起來看看UCL 2023入學(xué)ALevel、IB成績(jī)要求！ UCL A-Level標(biāo)準(zhǔn)入學(xué)要求 是A*A*A-ABB。當(dāng)...
2022年最不受歡迎的10大A-level科目排名！
A-Level（General Certificate of Education Advanced Level ），英國高中課程，是英國全民課程體系，是英國普通中等教育證書考試高級(jí)水平課程，也是英國學(xué)生的大學(xué)入學(xué)考試課程。 A-Level科目的受歡迎度在一定程...
A-Level最受歡迎科目排名！
A-Level（General Certificate of Education Advanced Level ），英國高中課程，是英國全民課程體系，是英國普通中等教育證書考試高級(jí)水平課程，也是英國學(xué)生的大學(xué)入學(xué)考試課程。 A-Level科目的受歡迎度在一定程...
Edexcel A Level Physics:復(fù)習(xí)筆記2.22 Efficiency
Efficiency The efficiency of a system is a measure of how well energy is transferred in a system Efficiency is defined as: The ratio of the useful power or energy transfer output from a syst...
Edexcel A Level Physics:復(fù)習(xí)筆記2.21 Power
Power The power of a mechanical process is the?rate at which energy is transferred Since work done is equal to the energy transferred, power can also be defined as the rate of doing work or?the wor...
Edexcel A Level Physics:復(fù)習(xí)筆記2.20 The Principle of Conservation of Energy
The Principle of Conservation of Energy The principle of conservation of energy?is a law of Physics which always applies to a?closed system To apply conservation of energy, heat losses are usually ...
