The methods of standardization or calibration employed have much in common even in the cases that appear most diverse.
The joule (/ËdÊuËl/), symbol J, is a derived unit of energy in the International System of Units. It is equal to the energy transferred (or work done) to an object when a force of one newton acts on that object in the direction of its motion through a distance of one metre (1 newton metre or NÂ·m).
A unit according to the electricity bill, is generally one kilowatthour, which is unit of ENERGY. What that means is that it is the equivalent to the amount of energy spent when doing work, with a power of one kilowatt, for the period of an hour.