in my view an ideal voltage souce means which is having
constant voltage irrespect of the current and having zero
internal resistance which is in series with the voltage
source

a voltage source witch in zero internal resistance is called ideal voltage source.
so any change in load resistance should not change in supply voltage

ideal voltage source is a circuit element where the voltage
across it is independent of current through it (i.e)
voltage remains constant and also the internal resistance
is zero

IT HAS A ZERO SERIES IMPEDANCE . IT IS ABLE TO PROVIDE A SAME VOLTAGE ACROSS ALL THE LOADS . IT HAS NO ANY LOSSES OR NO ANY POWER DISSIPATION .........

Hey all,
i have a circuit that contains a diode and 2 resistors here
is a link to the image
http://img46.imageshack.us/img46/2562/41930604.png
what i am think is that VL = 0.7V because of the silicon
diode so IL = 0.7/750*10^-3 = 0.9333 mA
and V0 = 0.7V
but i am not sure of my answerer

Susan made a block with small cubes of 8 cubic cm volume
to make a block ,3 small cubes long, 9 small cubes wide and
5 small cubes deep. She realizes that she has used more
small cubes than she really needed. She realized that she
could have glued a fewer number of cubes together to lock
like a block with same dimensions, if it were made hollow.
What is the minimum number of cubes that she needs to make
the block?
a) 114 b) 135 c) 21 d) 71