... NEGATIVE. * ELECTRICAL current flows from NEGATIVE TO POSITIVE. * So electrons flow opposite to the flow of conventional current. CURRENT - is the flow of electrons round the circuit. VOLTAGE - is the driving force that pushes the current round. RESISTANCE - is anything in the circuit that slows the flow down. There is a relationship between these three which is summarised as OHM'S LAW: V=IR voltage=Current x Resistance So if you increase the voltage - then more current will flow, if the resistance is constant. If you increase the resistance - then lass current will flow if voltage remains constant. Electromagnetic Induction This is the idea that magnetism can travel from one object to another even though they are insulated. * An example of how magnetic induction is used is in transformers. * Two coils of wire are wrapped around an iron core. * The primary coils are connected to ...

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