What are the differences between the circuits you find in your house and

the circuits on a microchip in a computer?

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

Anybody wanna ? (picture included? )

Most of the volume of an atom is occupied by the