Trading leverage or leveraged trading allows you to control much larger amounts in a trade, with a minimal deposit in your account. Leveraged trading is also known as margin trading. You can open up a small account with a brokerage, and then essentially borrow money from the broker to open a large position. This allows traders to magnify the amount of profits earned.
Since currencies are traded in pairs, it’s impractical and not very useful to draw a pure USD currency chart. Instead we have the option of drawing (or rather having the software plot for us) a chart of the USDJPY pair, or the AUDUSD pair, since it is only possible to quote a currency in terms of another. On the other hand, there are some forex charts that take weighted average of such currency pairs to derive an overall index for a currency. The famous USD index, is a good example.
Trading foreign exchange on margin carries a high level of risk and may not be suitable for all investors. The high degree of leverage can work against you as well as for you. Before deciding to trade foreign exchange you should carefully consider your investment objectives, level of experience and risk appetite. The possibility exists that you could sustain a loss of some or all of your initial investment and therefore you should not invest money that you cannot afford to lose. You should be aware of all the risks associated with foreign exchange trading and seek advice from an independent financial advisor if you have any doubts.