Determine the resistance of a busbar made of copper if the length is 16 meters long and the cross area is a 5x5 sq. cm. Use 1.7241 micro ohm-cm as the resistivity. (Provide drawing or FBD)

In the figure the ideal batteries have emfs ɛ1 = 20.4 V, ɛ2 = 9.05 V, and ɛ3 = 5.40 V, and the resistances are each 2.40 Q. What are the (a) size and (b) direction (left or right) of current i,? (c) Does battery 1 supply or absorb energy, and (d) what is its power? (e) Does battery 2 supply or absorb energy, and (f) what is its power? (g) Does battery 3 supply or absorb energy, and (h) what is its power? (a) Number i Units (b) (c) (d) Number i Units (e) (f) Number i Units (g) (h) Number i Units

germanium A compensated semiconductor at T = 300 K is doped with N₂ = 2 X 1012 cm-3 and N = 8 X a 1013 cm-3. Determine the thermal equilibrium electron and hole concentrations. no = 7.80 X 10¹3 cm-3 Po = 7.38 X 1012 cm-3 no = 8.48 X 1013 cm-3 Po= 6.79 X 1012 cm-3 no 1.23 X 1013 cm-3 = Po = 4.70 X 1013 cm-3 no 1.01 X 1013 cm-3 Po= 5.71 X 1013 cm-3 =

2. Find out the VOC and the fill factors (FFs) for solar cells with an Io of 10-18 A/cm2 for the following cases. a. Jsc =10 mA/cm2 and Rsh (shunt or parallel resistance)=1 k Ohm cm2b. Jsc =100 mA/cm2 and Rsh (shunt or parallel resistance)=100 k Ohm cm2

Calculate the equivalent resistances Rin of the following circuits. (The resistance value of the diodes in the conduction will be 0, the resistance value of the diodes in the insulation will be taken as infinity. R1=10ohm