Suppose that the united states and china trade exclusively with each other. what will happen to the value of the u. s. dollar, ceteris paribus, if the united states established a quota on all chinese products

The best answer to this question would be:

If the United States establishes a quota on all Chinese products "The U. S. dollar will appreciate."

The goal of this is to get people to purchase domestic goods, which can only be bought for local currency and hence increasing the value of US dollar.