What would happen if you had a car made completely of plastic, with no metal parts, and you drove over a vehicle sensor embedded in the road surface?
A. The circuit would detect the absence of magnetic flux, thereby working normally
B. The sensor would signal with the opposite polarity, indicating you've already gone through the intersection
C. The sensor would not notice you or your vehicle, and you'd be stuck at the red light
D. You would overload the sensor, so this is an excellent method for forcing all lights to turn green
Answer: C
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