Voltage and potential difference are the same thing. Nobody out of school uses the latter term. Voltage is the potential in an electrical circuit to cause the flow of current (ie, electrons). wikipedia: Voltage is commonly used as a short name for electrical potential difference.
Population of Jamaica 2014. As of 1 January 2015, the population of Jamaica was estimated to be 2 767 704 people. This is an increase of 0.73 % (20 112 people) compared to population of 2 747 592 the year before. In 2014 the natural increase was positive, as the number of births exceeded the number of deaths by 34 785. Due to external migration, the population declined by 14 672. The sex ratio of the total population was 0.969 (969 males per 1 000 females) which is lower than global sex ratio.
Jamaica On a Budget. Winnifred Beach. Jamaica is a Caribbean island country that is located just south of Cuba. It's a dramatically mountainous island that is surprisingly affordable when compared to other island countries in the Caribbean. It has a population of about 2.8 million people and its economy is mainly dependent on tourism, coffee, and other exports. The weather in Jamaica is generally hot and humid year around.