crs@lanl.ARPA (10/10/85)
> <<<<< > > If this is quiz time then my all time favorite is: > > > > Take 12 one ohm resistors and wire them so that they form a 3-D cube with > each resistor on an edge of the cube. What is the total resistance across > the long diagonal? > > > > > John Eaton > !hplabs!hp-pcd!john > > > I get 0.833333... ohms. Method: Assume a 3 amp current source entering the corner. Divide it using KCL at each node. Use the resulting currents to find voltage drops across each resistor. Sum these voltage drops from corner to corner. Use Ohm's law (R=E/I) to compute the resistance between corners. (Naturally, the corners in question are those at the end of the long diagonal mentioned in the original specification of the problem. -- All opinions are mine alone... Charlie Sorsby ...!{cmcl2,ihnp4,...}!lanl!crs crs@lanl.arpa