1) A device used to measure current. a) Ohm b) Thermistor c) Ammeter d) Volt 2) The unit for current. a) LDR b) Amps c) Ammeter d) Series circuit 3) The flow of electrons (or other charged particle). a) Amps b) Power c) Current d) Voltmeter 4) A circuit component that only allows current to flow in one direction. a) Diode b) Variable resistor c) Series circuit d) Ammeter 5) A thick piece of wire which is designed to 'blow' (actually melt) when the current becomes too large. a) Series circuit b) Resistor c) Fuse d) Variable resistor 6) Light dependent resistor. This component's resistance changes when the light level changes. a) Variable resistor b) Fuse c) LDR d) Watt 7) Light emitting diode. A small bulb-like component that gives off a single colour of light when a voltage is applied. a) Ammeter b) Resistance c) LED d) Series circuit 8) The unit for resistance - symbol Ω . a) Ohm b) LED c) Watt d) Ammeter 9) A circuit which has wires that split, or branch off. In this type of circuit the current will also split. a) Parallel circuit b) Variable resistor c) Current d) Amps 10) The rate of use of energy/a measure of how quickly energy is transferred. a) Variable resistor b) Series circuit c) Diode d) Power 11) This reduces the flow of current. The more there is of this, the less current. a) Resistor b) Resistance c) LED d) Parallel circuit 12) A component that adds resistance to a circuit. a) Diode b) Power c) Resistor d) Resistance 13) A circuit which only has one path for the current to flow. a) Amps b) Watt c) Power d) Series circuit 14) This component's resistance changes as the temperature changes. a) Power b) Thermistor c) Ohm d) Resistance 15) A component which can have its resistance altered using a dial or slider. a) Variable resistor b) Thermistor c) Volt d) Fuse 16) The unit for voltage a) Volt b) Series circuit c) Diode d) Power 17) A device used to measure voltage. a) LED b) Ohm c) Voltmeter d) Power 18) The unit for power a) Voltmeter b) Watt c) LDR d) Ammeter

Electrical Components Speed Quiz

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