Pollution from bright city lights makes it nearly impossible to stargaze within a city setting. The supply and demand for electricity used in city lighting are shown in the graph. Suppose the marginal external cost for an additional kilowatt- nour (kWh) of electricity is 5 cents. Drag the endpoints of the olue line to draw in the marginal social cost (MSC) curve for electricity. Place the black dot at the point corresponding to the socially optimal quantity and price for electricity.

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Chapter10: Externalities
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Pollution from bright city lights makes it nearly impossible to
stargaze within a city setting. The supply and demand for
electricity used in city lighting are shown in the graph.
Suppose the marginal external cost for an additional kilowatt-
hour (kWh) of electricity is 5 cents. Drag the endpoints of the
blue line to draw in the marginal social cost (MSC) curve for
electricity. Place the black dot at the point corresponding to
the socially optimal quantity and price for electricity.
Assume the government places an optimal Pigouvian tax on
electricity used at night to reduce light pollution so that
people can enjoy the stars.
As a result of the Pigouvian tax,
consumers pay a higher price for electricity at night
and producers increase output.
consumers pay a lower price for electricity and
producers increase output.
consumers pay a lower price for electricity and
producers lower output.
consumers pay a higher price for electricity and
Price, marginal social cost of electricity (cents/kWh)
50
40
30
20
10
0
MSC of Light Pollution
Quantity of electricity (kWh)
S
D
Transcribed Image Text:Pollution from bright city lights makes it nearly impossible to stargaze within a city setting. The supply and demand for electricity used in city lighting are shown in the graph. Suppose the marginal external cost for an additional kilowatt- hour (kWh) of electricity is 5 cents. Drag the endpoints of the blue line to draw in the marginal social cost (MSC) curve for electricity. Place the black dot at the point corresponding to the socially optimal quantity and price for electricity. Assume the government places an optimal Pigouvian tax on electricity used at night to reduce light pollution so that people can enjoy the stars. As a result of the Pigouvian tax, consumers pay a higher price for electricity at night and producers increase output. consumers pay a lower price for electricity and producers increase output. consumers pay a lower price for electricity and producers lower output. consumers pay a higher price for electricity and Price, marginal social cost of electricity (cents/kWh) 50 40 30 20 10 0 MSC of Light Pollution Quantity of electricity (kWh) S D
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