Ammeter - A device used to measure current., Amps - The unit for current., Current - The flow of electrons (or other charged particle)., Diode - A circuit component that only allows current to flow in one direction., Fuse - A thick piece of wire which is designed to 'blow' (actually melt) when the current becomes too large., LDR - Light dependent resistor. This component's resistance changes when the light level changes., LED - Light emitting diode. A small bulb-like component that gives off a single colour of light when a voltage is applied., Ohm - The unit for resistance - symbol Ω ., Parallel circuit - A circuit which has wires that split, or branch off. In this type of circuit the current will also split., Power - The rate of use of energy/a measure of how quickly energy is transferred., Resistance - This reduces the flow of current. The more there is of this, the less current., Resistor - A component that adds resistance to a circuit., Series circuit - A circuit which only has one path for the current to flow., Thermistor - This component's resistance changes as the temperature changes., Variable resistor - A component which can have its resistance altered using a dial or slider., Volt - The unit for voltage, Voltmeter - A device used to measure voltage., Watt - The unit for power,

Electrical Components

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