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...
Potential Divider Circuits When two resistors are connected in series, through?Kirchhoff’s Second Law, the potential difference across the power source is divided between them Potential dividers ar...
Heating Effect of Current When electricity passes through a component, such as a resistor, some of the electrical energy is turned into heat, therefore, increasing its temperature The heat that is ...
Series & Parallel Circuits The following statements for series and parallel circuits are a consequence of?Kirchhoff's first?and?second law In a?series?circuit: The current is the same at any po...
