Properties of Circular Motion For an object moving in a circle, it will have the following properties: Period Frequency Angular displacement Angular velocity These properties can be inferred from t...
Solving Problems Involving Magnetic Forces There is a lot of mathematics surrounding magnetism and magnetic forces The key equations are: Force on a current-carrying conductor: F = BIL Force on a m...
作為A-Level考試中的熱門選手，化學(xué)一直是同學(xué)們又愛又恨的存在：各種各樣的反應(yīng)式，專有名詞，實驗操作實在讓人應(yīng)接不暇，然而這背后又有相對較高的A和A*率。 今天就讓我們好好來看看A-level化學(xué)都在學(xué)什么？到...
Magnetic Force on a Current-Carrying Conductor A current-carrying conductor produces its own?magnetic field When interacting with an external magnetic field, it will experience a?force A current-ca...
Magnetic Force on a Charge Calculating Magnetic Force on a Moving Charge The magnetic force on an isolating moving charge, such an electron, is given by the equation: F = BQv sinθ Where: F = force ...
Magnetic Fields Magnetic Field Definition A magnetic field is a?field of force?that is created either by: Moving?electric charge Permanent?magnets Permanent magnets are materials that produce a mag...
Electromotive Force When charge passes through a power supply such as a battery, it?gains?electrical energy The?electromotive force (e.m.f)?is the amount of?chemical?energy converted to?electrical?...
Terminal Potential Difference Defining Potential Difference A cell makes one end of the circuit positive and the other negative. This sets up a?potential difference?V?across the circuit The potenti...
Investigating Electric Cells Zinc-carbon cells Zinc-carbon cells are the most common type of?primary cells, consisting of a zinc casing which acts as the?negative electrode a paste of ammonium chlo...
