Demand and supply; effects of export taxes on consumer and producer of cars

Using a demand/supply diagram, illustrate and explain the effects of the imposition of an export tax on a good Y by a home country's government on

   (i) the home country's consumers of Y, 

   (ii) the home country's producers of Y, and 

   (iii) the home government's tax revenues. (Assume that the country is a "small” country.) Then evaluate the "net welfare effect” of the tax on the country. Why might a country want to impose an export tax? Explain.

(b) Suppose now that the country imposing the export tax in part (a) of this question is a "large” country rather than a "small” country. Is it an advantage or a disadvantage for a country to be "large” rather than "small” when it imposes an export tax? Explain.