An electrical current - is the rate of flow of electric charge. It is measured in amperes (amps) using an ammeter, An ammeter - must be connected in series with the components in the circuit, A series circuit means that ... - .. it is a circuit where all components are in one loop connected by wires, so there is only one route for current to flow, A parallel circuit means ... - ... the components are on separate branches, so the current can take different routes around the circuit, In a parallel circuit - no current is lost at a junction, so the total current into the junction equals the total current out of the junction the components in the circuit, In a series circuit - the current is the same at any point in the circuit, so if the ammeter was moved after the switch the amps would be the same, The voltage - across components in a circuit is measured in volts, using a voltmeter. Voltmeters are always connected in parallel across the component, Equal current everywhere in the circuit and voltage is shared between the components = - A series circuit, Current is shared between the components and equal voltage across each component in the circuit = - A parallel circuit,

Electric circuits

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