Edexcel DT: Electronic Components Quiz

What is the main function of a resistor in an electronic circuit?

• To increase the voltage

• To store electrical energy

• To limit the flow of electric current

• To convert electrical energy into light

Which of the following is NOT a characteristic of diodes?

• They allow current to flow in both directions

• They have a high resistance in one direction

• They are used to convert AC to DC

• They can protect circuits by limiting voltage spikes

What is the purpose of an integrated circuit (IC)?

• To increase the power of a signal

• To perform a specific electronic function in a compact form

• To store large amounts of electrical energy

• To connect different components wirelessly

What does the color coding on a resistor indicate?

• The manufacturer

• The resistance value

• The voltage rating

• The power rating

Which type of diode is commonly used to emit light?

• Zener diode

• Light Emitting Diode (LED)

• Schottky diode

• Photodiode

What is one main advantage of using integrated circuits compared to discrete components?

• They consume more power

• They are larger in size

• They offer higher performance in a smaller size

• They are less reliable

In a printed circuit board (PCB), what is the purpose of the copper tracks?

• To insulate different components from each other

• To provide a path for electrical current between components

• To store electrical energy

• To cool down the components

Which component is used to control the flow of current in a circuit without changing its direction?

• Capacitor

• Resistor

• Inductor

• Transformer

What is the main difference between an NPN and a PNP transistor?

• The direction of current flow

• The color

• The voltage rating

• The power rating

Why are surface mount technology (SMT) components preferred in modern PCB design?

• They require more power

• They are larger and easier to handle

• They allow for more compact and efficient designs

• They are less reliable than through-hole components