Would a rise in the US interest rate cause a movement along the US demand curve for a foreign currency?
As interest rates are a major factor of the income you can earn by lending money, of bond pricing and of the amount you will have to pay to borrow money, it is important that you understand how prevailing interest rates change: primarily by the forces of supply and demand, which are also affected by inflation and monetary policy. Of course, when you are deciding whether to invest in a debt security, it is important to understand how its characteristics determine what kind of interest rate you can receive. Interest rate levels are a factor of the supply and demand of credit: an increase in the demand for credit will raise interest rates, while a decrease in the demand for credit will decrease them. Conversely, an increase in the supply of credit will reduce interest rates while a decrease in the supply of credit will increase them.
Here is the explanation: As the increase of interest rate causes the increase of the amount of investments flowing to the country, so the currency (U.S dollar) will worth more. As a result, the purchasing power will rise, so less amount of money for a good (foreign currency) will be required. Thus, a rise in the US interest rate causes a movement along the US demand curve for a foreign currency.