Increasing interest rates can have a significant impact on a country's currency because they influence the attractiveness of that country's assets to investors. Here's how it works:

Higher Interest Rates Attract Capital: When a country's central bank raises interest rates, it generally offers higher returns on its bonds, savings accounts, and other interest-bearing assets. This attracts foreign capital as investors seek to take advantage of the higher returns.

Demand for the Currency Rises: As foreign investors purchase the country's assets to benefit from the higher interest rates, they need to convert their own currency into the local currency. This increased demand for the local currency can drive up its exchange rate.

Capital Inflows Increase: Higher interest rates can lead to more significant capital inflows into the country, which can strengthen its currency.

Inflation Expectations: Rising interest rates may also signal to investors that the central bank is trying to combat inflation. Higher interest rates can reduce consumer spending and borrowing, which can help control inflation. Therefore, if investors believe that a country's central bank is effective in controlling inflation, they may be more willing to hold that country's currency, contributing to its appreciation.

It's essential to note that while higher interest rates can lead to currency appreciation, other factors also play a role in determining exchange rates. These factors include economic fundamentals, political stability, trade balances, geopolitical events, and market sentiment, among others.

Additionally, the relationship between interest rates and currency values can be more complex in the real world, as central banks may adjust rates for various reasons, including economic growth, inflation, and employment, and currency markets are influenced by a wide range of factors. Therefore, while interest rate changes can influence currency values, traders and investors in the forex market consider a broad set of factors when making trading decisions.