Figure 10-18. The graph represents a corrective tax to reduce pollution. On the axes, Q denotes the quantity of pollution and P represents the price of pollution. 
-Refer to Figure 10-18. What is the appropriate label for the downward-sloping line on the graph?
Definitions:
Commutator
A rotary electrical switch in certain types of electric motors and generators that periodically reverses the direction of current flow through the rotor.
AC Generator
An alternator in a vehicle that converts mechanical energy into alternating current electricity to power electrical systems.
Diodes
Semiconductor devices that allow current to flow in one direction, often used in electronics to rectify, switch, or modulate signals.
Direct Current
An electric current that flows in one direction only, used in many electronic devices and battery-powered systems.
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