Which type of component does not amplify or switch signals?

• Transistor

• Resistor

• Diode

• Op-Amp

What is the main function of a capacitor in a circuit?

• Limit current

• Store and release energy

• Convert AC to DC

• Act as a variable resistor

Inductors are most commonly used in…

• Filters and power supplies

• Lighting circuits

• Logic gates

• Amplifier feedback loops

Which component is a variable resistor?

• Zener diode

• Transformer

• Potentiometer

• Bridge rectifier

Which component only allows current to flow in one direction?

• Resistor

• Diode

• Relay

• LED

Which active device is designed specifically to regulate voltage?

• Zener diode

• Capacitor

• Inductor

• Motor

Which is an electromechanical component?

• Buzzer

• LED

• Logic gate

• 555 timer

A bridge rectifier is used to…

• Step down AC voltage

• Convert AC to DC

• Store energy

• Amplify current

Which IC is best known for timing and pulse generation?

• Op-Amp

• 555 Timer

• Microcontroller

• Logic gate

Microcontrollers are powerful because they…

• Can store electrical charge

• Are electromechanical switches

• Can be programmed to control many functions

• Only allow current to flow one way