Year 09 Electronics Components

What is the primary function of a battery?

• To limit the flow of electrical current

• To store electrical energy

• To emit light

• To act as a micro switch

What does the symbol for a battery represent in a circuit diagram?

• A storage of electrical energy

• A component that limits electrical current

• A device that lights up when electricity flows through it

• A micro switch

What happens when a ‘Push to Make’ switch is pressed?

• The switch emits light

• The switch opens

• The switch stores energy

• The switch closes

What is the function of a Light Emitting Diode (LED)?

• To store electrical energy

• To light up when electricity flows through it

• To limit the flow of electrical current

• To act as a micro switch

In which direction do electrons flow in a diode?

• Both directions

• Randomly

• They do not flow

• Only one way

What is the purpose of a resistor in an electrical circuit?

• To emit light

• To store electrical energy

• To limit the flow of electrical current

• To act as a micro switch

How is the value of a resistor indicated?

• By its size

• By colored bands

• By its shape

• By its weight

What principle does a bulb work on?

• Incandescence

• Resistance

• Capacitance

• Inductance

What are the parts of a thyristor?

• Anode, Cathode, and Gate

• Battery, Resistor, and LED

• Switch, Diode, and Bulb

• PCB, Resistor, and Capacitor

What is one of the benefits of using a Printed Circuit Board (PCB)?

• It stores electrical energy

• It emits light

• It acts as a micro switch

• It makes connections easier