Centripetal Force An object moving in a circle is not in equilibrium, it has a resultant force acting upon it This is known as the?centripetal force?and is what keeps the object moving in a circle ...
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...
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...
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...
