Electronic Systems Quiz

To make an electronic system work , a 'signal' passes from one 'block' to the next. A 'block' can be a device or a component.

E.g. Input Signal - Input Block - sends signal to - Process Block - send signal to - Output Block - Output signal.

Which of the below is NOT a signal.

• Pressing a switch

• Making a noise

• An LED bulb

• Giving off light

What is the role of a switch in an electronic circuit?

• To increase the voltage

• To allow or stop the flow of current

• To change the resistance

• To amplify the signal

Which component is used to store electrical energy in a circuit?

• Resistor

• Battery

• Bulb

• Speaker

What does a variable resistor do in a circuit?

• Changes the voltage

• Changes the resistance

• Changes the current

• Changes the frequency

Which of these is NOT a type of variable resistor?

• Thermistor (detects changes in temperature)

• LED (Light Emmiting Diode)

• LDR (Light Dependant Resistor)

• Pressure Sensor (detects changes in pressure)

What is the function of a thermistor?

• Detects changes in light

• Detects changes in temperature

• Detects changes in pressure

• Detects changes in sound

Which of these devices is NOT an input device for a computer?

• Keyboard

• Mouse

• Camera

• Speaker

What type of sensor detects changes in pressure?

• Light-dependent resistor

• Thermistor

• Pressure sensor

• Temperature sensor

What happens when a switch is turned on in a circuit?

• The circuit is broken

• The current stops flowing

• The current is allowed to flow

• The resistance increases

What is the purpose of an input device in an electronic system?

• To output signals

• To process data

• To receive external signals

• To store energy