Which of the following best describes the primary function of a printed circuit board (PCB)?
Think about what holds and connects electronic parts inside devices.
A PCB is a physical board that holds electronic components and connects them with copper traces, enabling the device to function.
What is the most common base material used to make a printed circuit board?
It is a strong, insulating material often used in construction.
Most PCBs use fiberglass reinforced epoxy resin as the base because it is strong, insulating, and stable.
Which option correctly lists the typical layers of a multi-layer PCB from top to bottom?
Think about protective layers on the outside and conductive layers inside.
A multi-layer PCB typically has solder mask on the outside, copper layers beneath it, and a substrate in the middle.
You have a PCB where a component is not receiving power. Which of the following is the most likely cause?
Consider what physically connects the power to the component.
If the copper trace is broken or missing, the electrical connection is interrupted, so the component won't get power.
A PCB design is experiencing unexpected signal interference. Which design mistake is most likely causing this issue?
Think about how signals can affect each other when placed too close.
High-speed signals placed near noisy power lines without good grounding can cause interference due to electromagnetic coupling.