The same voltage is available at each outlet. Each (parallel) circuit draws a current that is the result of that voltage applied to the device impedance. The parameters that limit the current may be simply resistance like a toaster, inductive reactance like in a older florescent ballast, back EMF as in a spinning motor, or capacitive reactance as in motor starting circuits etc.
http://en.wikipedia.org/wiki/Electrical_...
http://en.wikipedia.org/wiki/Back_EMF
nearly all house applainces need 220vac but it doesn't mean they are taking all of the current.the switches or connections of house are connected in parallel.simple is that you can understand by series and parallel resistors combination.
they have same voltage across them but does not have same current .
and the current is distributed across each applainces according to the requirement.
the current is determined by there resistance to flow. and the power they required . more the power more the current through them. more resistance across the device more resistance to flow of current and less current across the device.
Domestic appliances demand the same input potential or voltage of 120V or 220V.
Each appliance has a different internal resistance.
E= IR and Power is I^2R,
Since R is changed, the current and the power changes up or down accordingly.
The short answer is yes. The longer answer is that the power requirements all vary. This means the current requirements are all different.
Is it through internal resistance of the device?
