Rear window defoggers use the principle of ____ to heat the glass.
A) controlled resistance
B) infinite resistance
C) alternating current
D) multiplexing

Question

Quizplus · Accepted Answer

Rear window defoggers work by passing an electrical current through a grid of thin wires on the glass of the rear window. The wires have a higher resistance than the surrounding glass and as current flows through them, they heat up, warming the glass and melting away any ice or fog. The resistance of the wires is carefully controlled to regulate the amount of heat generated, which creates a uniformly defrosted window without damaging the glass.

Rear Window Defoggers Use the Principle of ____ to Heat