Solve if you can

**One of the best email forwards I received.

To all, who know how to solve the problems mathematically, something for you all?
Please solve it


Kirchoff's Current Law (KCL):
At every node, the sum of all currents entering a node must equal zero.

Kirchoff's Voltage Law (KVL):
The voltage law says that the sum of voltages around every closed loop in the circuit must equal zero.

Exercise:
Please apply Kirchoff's Current and Voltage laws to the following figures.

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figure:1



figure:2