26. Transistor Reliability

Question.3

Tobias is debugging a circuit where a transistor-controlled load turns ON and OFF randomly.
Sometimes the circuit works perfectly, and other times it fails without any change in software or wiring.

What is the reason for this intermittent behavior?

The transistor has a very high current rating
The control pin is floating or poorly driven
The load resistance is constant
The PCB is manufactured incorrectly

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