Which consequence results when exceeding a printed circuit board's (PCB) current limits?

💡 Explanation

Trace fusing occurs when excessive current heats the PCB trace beyond its current-carrying capacity, causing the conductor to melt and open the circuit, because of joule heating overwhelming thermal dissipation capabilities and triggering catastrophic failure. This result occurs rather than dielectric breakdown, which requires high voltage.

• Which failure mode emerges when sustained engine knocking subjects an internal combustion engine's crankshaft to cyclical stress exceeding endurance limits?
• Which consequence results when aircraft automatic landing systems experience excessive radio interference during final approach?
• Which operational risk rises in hydraulic servovalves as fluid temperature increases, approaching the vapor pressure?
• Which outcome occurs when avalanche breakdown arises in a silicon p–n junction designed for a voltage rectifier?
• Which outcome occurs when pressure increases a Zener voltage?
• Which aerodynamic effect compromises an aircraft's stability during icing?