| what is this component in a circuit | a cell |
| what is the function of a cell | provides energy/voltage to a circuit |
| what is the application of cells | electronic devices |
| what is this component | battery |
| what is the function of batteries | provide energy/voltage to a circuit |
| what is the application of batteries | electronic devices |
| what is this component | lamp |
| what is the function of lamps | changes electrical energy into light and heat energy |
| what is the application of lamps | lighting |
| what is this circuit symbol | switch |
| what is the function of a switch | control operation of a circuit |
| what is the application of switches | electrical circuits |
| what is this component | resistor |
| what is the function of a resistor | limits current through other components, controls voltage across other components |
| what is the application of resistors | protecting LED's |
| what is this component | variable resistor |
| what is the function of a variable resistor | limits current through other components, controls voltage across other components |
| what is the application of variable resistor | dimmer switch, motor speed control |
| what is this component | voltmeter |
| what is the function of a voltmeter | measures the voltage across a component |
| what is the application of voltmeter | testing circuit wiring |
| what is this component | ammeter |
| what is the function of an ammeter | measures current through a circuit |
| what is the application of an ammeter | testing circuit operation |
| what is this component | ohmmeter |
| what is the function of an ohmmeter | measures the resistance across a component |
| what is the application of an ohmmeter | testing circuit resistance |
| what is this component? | LED |
| what is the function of an LED | emits light |
| What is the application of an LED | lighting, on / off indication |
| what is this component | motor |
| what is the function of a motor | converts electrical energy into kinetic energy |
| what is the application of a motor | drills, engines, pumps |
| what is this component | microphone |
| what is the function of a microphone | converts sound energy into electrical energy |
| what is the application of a microphone | sound recording, public address systems |
| what is this component | loudspeaker |
| what is the function of a loudspeaker | converts electrical energy into sound energy |
| what is the application of a loudspeaker | public address systems |
| what is this component | photovoltaic cell |
| what is the function of a photovoltaic cell | converts light energy into electrical energy |
| what is the application of a photovoltaic cell | solar cells, calculators |
| what is this component | fuse |
| what is the function of a fuse | protects wiring in a circuit |
| what is the application of a fuse | mains electrical equipment |
| what is this component? | diode |
| what is the function of a diode? | prevents current flowing in one direction |
| what is the application of a diode | a.c. to d.c. rectification |
| what is this component? | capacitor |
| what is the function of a capacitor | stores electrical charge |
| what is the application of a capacitor | timing circuits, smoothing currents |
| what is this component | thermistor |
| what is the function of a thermistor | temperature dependant resistor |
| what is the application of a thermistor | temperature control circuits, electronic thermostats |
| what is this component? | light dependant resistor |
| what is the function of a light dependent resistor | resistance changes with light level |
| what is the application of light dependant resistors | automatic lighting circuits |
| what is this component | relay |
| what is the function of a relay | current flowing through solenoid closes the switch |
| what is the application of a relay | remote switching circuits |
| what is this component | npn transistor |
| what is the function of an npn transistor | voltage at the base allows current to flow through the transistor |
| what is the application of an npn transistor | electronic devices, remote controls |
| what is this component | n-channel enhancement mode MOSFET |
| what is the function of a MOSFET | voltage at the gate allows current to flow through the transistor |
| what is the application of a MOSFET | electronic devices, remote controls |
