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A designer made a 6-layer PCB but forgot to include a dedicated ground plane layer. What problem is most likely to occur?

medium📝 Formula Fix Q14 of 15
PCB Design - Multi-Layer PCB Design
A designer made a 6-layer PCB but forgot to include a dedicated ground plane layer. What problem is most likely to occur?
AThe power supply will not work.
BIncreased signal noise and interference.
CThe PCB will have too many layers.
DThe board will be physically unstable.
Step-by-Step Solution
Solution:
  1. Step 1: Identify missing ground plane role

    Ground planes provide a reference and shield to reduce noise in signals.
  2. Step 2: Predict effect of missing ground plane

    Without it, signals can pick up noise and interference, causing errors.
  3. Final Answer:

    Increased signal noise and interference. -> Option B
  4. Quick Check:

    Missing ground plane = More noise [OK]
Quick Trick: Ground plane is key for clean signals [OK]
Common Mistakes:
MISTAKES
  • Thinking physical stability depends on ground plane
  • Confusing layer count with signal quality
  • Assuming power supply depends on ground plane presence

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