The 3 parts of an electronic system are : 10 Seconds Remaining The 3 parts of an electronic system are : Input , Output and Throughput Output , Process and Throughput Process , Output and Throughput Input, Process and Output

All output devices turn : 20 Seconds Remaining All output devices turn : Electrical energy into sound energy Sound into electrical energy Light into electrical energy Electrical energy into some other form

20 Seconds Remaining Loudspeakers : Turn electrical energy into sound and can be used in a DVD recorder Turn sound into electrical energy and can be used in a television Turn sound into electrical energy and can be used in a DVD recorder Turn electrical energy into sound and can be used in a television

The main energy change in an electrical motor is : 15 Seconds Remaining The main energy change in an electrical motor is : Electrical energy into kinetic energy Electrical energy into kinetic and sound energy Electrical energy into kinetic , heat and sound energy

A relay is : An analogue device which uses a small current to switch a bigger one on A digital device which uses a large current to switch a smaller one on A digital device that uses a small current to switch a larger one on An analogue device that uses a large current to switch a smaller one on :20

7 segment display, Digital Relay, Digital 20 Seconds Remaining The most suitable output device to lock all the doors in central locking system is : Led , Analogue Solenoid, Digital 7 segment display, Digital Relay, Digital

20 Seconds Remaining LEDs : Turn electrical energy into light and give out lots of colours of light Turn electrical energy into light and can be connected either way in a circuit Turn electrical energy into light and have a lens fitted to them Turn electrical energy into light and heat energy

LEDs have a protecting resistor fitted to : 20 Seconds Remaining LEDs have a protecting resistor fitted to : Increase the size of the current Control the size of the current flowing through the LED Increase the voltage across the LED Complete the circuit

The voltage across the LED is: 90

A current of 20 mA flows through the LED when the voltage across it is 2V. Calculate the value of the protecting resistor when the LED is wired to a 6V supply. 100 Ω 0.01 Ω 200 Ω 300 Ω 90

7 segment displays are Analogue devices used in monitors 20 Seconds Remaining 7 segment displays are Analogue devices used in monitors Digital devices used in DVD recorders Analogue devices used in DVD recorders Digital devices used monitors