In the circuit of Fig. P3, calculate V1 and V2. 1 V 2 V + 5 V V2 +

3. The efficiency of a single p-n junction solar cell in converting solar energy to electricity depends on the energy band gap of the specific solar cell material, as shown in the figure below. Based on results from question #3 above and also searching the internet if necessary, give a physical explanation of the bell-shape dependence of solar cell efficiency on band gap energy, Eg. That is, why efficiency of solar cell initially increases as a function of band gap, peaks at about 1.2-1.4 eV, and then decreases as band gap further increases? 50 Si InP GaAs 40 CdTe Ge 30- C-1000 c- Cds 20 10 1 2 3 Bandgap energy, E, (eV) (%)Efficiency

Hey, A power grid is to be created in a city. There are several buildings and there are pairedconnections between the buildings. Not every building is connected to every other building. In particular, there may be buildings that are not connected to any other building.Based on the mentioned connections, a power grid is to be designed now. Therebystarting from a given building (the electricity factory), so that as many buildings as possible are in the network.as many buildings as possible are in the network.A power cable can be laid only between connected buildings and there will be exactlyone power cable is needed for a connection between two buildings. A building is in thepower grid if it can be reached from the power factory by one or more power cables. Specify an algorithm in pseudo code that, given buildings and connections, calculates a power gridthat satisfies the above properties with as few power cables as possible.Determine the running time of your algorithm and give a…

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